TLE8457ASJ [INFINEON]
Telecom Circuit, 1-Func, BICMOS, PDSO8, SOP-8;
| 型号： | TLE8457ASJ |
| 厂家： | 
Infineon |
| 描述： | Telecom Circuit, 1-Func, BICMOS, PDSO8, SOP-8 电信 信息通信管理 光电二极管 电信集成电路 |
| 文件： | 总33页 (文件大小：1124K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TLE8457
LIN Transceiver with integrated Voltage Regulator
1
Overview
Features
•
•
•
Single-wire LIN transceiver for transmission rates up to 20 kBit/s
Compliant to ISO 17987-4, LIN specification 2.2A and SAE J2602
5 V or 3.3 V Low Drop-Out Linear Voltage Regulator with 70 mA current
capability
•
•
•
•
•
•
Stable with ceramic output capacitor of 1 µF
Ultra low current consumption in Sleep Mode of max. 16µA
Ultra low current consumption in Standby Mode: typical 20 µA
Very low leakage current on the BUS pin
V
CC undervoltage detection with RESET output
TxD protected with dominant time-out function and state check after
mode change to Normal Operation Mode
•
•
•
•
•
Initialization watchdog with automatic transition to Sleep Mode
BUS short to VBAT protection and BUS short to GND handling
Over-temperature protection and supply undervoltage detection
Very high ESD robustness; ±8kV according to IEC61000-4-2
Optimized for high Electromagnetic Compatibility (EMC);
Very low emission and high immunity to interference
•
•
•
•
Available in standard PG-DSO-8 and leadless PG-TSON-8 packages
PG-TSON-8 package supports Automated Optical Inspection (AOI)
Green Product (RoHS compliant)
AEC Qualified
Applications
•
•
•
•
•
•
LIN slave satellite modules
Window lifters
Rain/light sensors
Sun roof control modules
Wiper modules
Ambient lighting
Data Sheet
www.infineon.com/transceivers
1
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Overview
Description
The TLE8457 is a monolithic integrated LIN transceiver and Low Drop-Out voltage regulator. The device is
designed to supply a microcontroller and peripherals with up to 70mA, provide protection through VCC
undervoltage reset, while also offering bi-directional bus communication compliant to LIN Specification 2.2A
and SAE J2602. With the ultra low quiescent current consumption of typical 20 µA in Standby Mode the
TLE8457 is especially suited for applications that are permanently supplied by the battery.
Based on the Infineon BiCMOS technology the TLE8457 provides excellent ESD robustness together with a very
high level of electromagnetic compatibility (EMC). The TLE8457 is AEC qualified and tailored to withstand the
harsh conditions of the automotive environment.
Type
LDO VCC Output Voltage Package
Marking
8457A
8457A
8457B
8457B
TLE8457ASJ
TLE8457ALE
TLE8457BSJ
TLE8457BLE
5 V
PG-DSO-8
PG-TSON-8
PG-DSO-8
PG-TSON-8
5 V
3.3 V
3.3 V
Data Sheet
2
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Table of Contents
1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
3
3.1
3.2
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
4.1
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Normal Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Init Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Sleep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Bus Wake-up event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Mode Transition via EN pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Power-Up / Power-Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
VS Undervoltage Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
VCC Undervoltage Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Reset Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Initialization Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
LIN Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
TxD Time-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Short Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Over-temperature Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.2
4.2.1
4.2.2
4.3
4.3.1
4.3.2
4.4
4.5
4.5.1
4.5.2
4.6
5
General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Thermal Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1
5.2
5.3
6
6.1
6.2
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Functional Device Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Application Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
ESD Robustness according to IEC61000-4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Transient Robustness according to ISO 7637-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
LIN Physical Layer Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.1
7.2
7.3
7.4
8
9
Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Data Sheet
3
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Block Diagram
2
Block Diagram
Linear Regulator
8
VCC
Bandgap
Reference
Driver
Current Limitation
V
CC Undervoltage
Detection
Control
VCC
1
VS
RNRST
7
NRST
EN
Supply Monitor
Rslave
Control
Wake
Receiver
2
VCC
REN
Over-Temperature
and Over-Current
Protection
RTxD
Transmitter
4
BUS
6
5
Driver
TxD
RxD
Time-Out
VCC
Receiver
BUS
RF-
Filter
3
GND
VS /2
TLE8457_BLOCK_DIAGRAM
Figure 1
Block diagram
Data Sheet
4
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Pin Configuration
3
Pin Configuration
3.1
Pin Assignment
VS
EN
1
2
3
4
8
7
6
5
VCC
VCC
VS
EN
1
2
3
4
8
7
6
5
NRST
TxD
NRST
TxD
RxD
(PAD)
GND
BUS
GND
BUS
RxD
PG-TSON-8
(Top side X-Ray view)
PG-DSO-8
TLE8457_PINNING
Figure 2
Pin configuration
3.2
Pin Definitions and Functions
Pin
1
Symbol
Function
VS
Battery Supply Voltage;
Decoupling capacitor required
2
EN
Enable Input;
Integrated pull-down resistor
Logical “high” to select Normal Operation Mode
3
4
GND
Ground
BUS
BUS Input / Output;
Integrated LIN Slave Termination
5
6
7
RxD
Receive Data Output;
Monitors the LIN bus signal in Normal Operation Mode
Indicates a wake-up event in Init Mode
TxD
Transmit Data Input;
Integrated pull-up resistor
Logical “low” to drive a dominant signal on the LIN bus
NRST
Undervoltage Reset Output;
Integrated pull-up resistor
Logical “low” during Reset
Voltage Regulator Output;
Output capacitor requirements specified in Functional Device Characteristics
8
VCC
PAD
–
Connect to PCB heat sink area. Do not connect to other potential than GND
Data Sheet
5
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4
Functional Description
4.1
Operating Modes
The operation mode of the TLE8457 is controlled with the EN and TxD input pins (see Figure 3 and Table 2).
The TLE8457 has 3 major operation modes:
•
•
•
Normal Operation Mode
Standby Mode
Sleep Mode
Additionally the TLE8457 has an Init Mode that is automatically entered when powering up, detecting wake-
up events or in case of malfunctions.
Power-up
Recovery from over-
temperature event on
voltage regulator
Standby Mode
1
LIN transceiver: Off
LDO regulator: On
EN: Low
11
13
NRST: High
Init Mode
12
CC
LIN transceiver: Off
LDO regulator: On
EN: Low
10
8
RxD: Wake-up source1)
NRST: High2)
2
7
e
EN
ag
volt
BUS Wake-up
under
6
VCC
9
5
3
Normal Operation Mode
Sleep Mode
LIN transceiver: Off
LDO regulator: Off
EN: Low
LIN transceiver: On
LDO regulator: On
EN: High
AND
EN
TxD
4
NRST: Low
NRST: High
1) Wake-up Source:
RxD:
RxD:
logical „high“ after Power-up or Reset
logical „low“ after BUS Wake-up detection
2) Reset:
NRST will stay „low“ during LDO failures and for the Reset time tRST
TLE8457_MODE_DIAGRAM
Figure 3
Operation mode state diagram
Data Sheet
6
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
Table 1
Operation mode transitions
No. Reason for transition
Comment
1
2
3
4
5
6
Power-on detection
The VS supply voltage rise above the VS,PON power-on reset level
Triggered by logical “high” level
Mode change with EN input
V
CC undervoltage detection
VCCoutput voltage fall below the reset threshold level
Mode change with EN and TxD inputs Triggered by logical “low” level on EN and TxD
Mode change with EN input
Bus wake-up detection
Triggered by logical “high” level
RxD set “low” for signalling the bus wake-up event to the
microcontroller
7
8
Bus wake-up detection
RxD set “low” for signalling the bus wake-up event to the
microcontroller
Initialization watchdog timer
elapsed
Forced transition to Sleep Mode because of no response from
microcontroller after power-on, wake-up, reset or if local errors
are preventing VCC to power up
9
Mode change with EN and TxD inputs Triggered by logical “low” level on EN while TxD is held “high”
10 Mode change with EN input
11 Bus wake-up detection
Triggered by logical “high” level
RxD set “low” for signalling the bus wake-up event to the
microcontroller
12 VCC undervoltage detection
Detection of failure due to VCC undervoltage or recovery from an
over-temperature event
13 Recovery from LDO over-
temperature event
When over-temperature on the LDO is detected the TLE8457 is
disabled. After recover the device is activated in Init Mode
Table 2
Mode
Operating Mode Control
Control
Functionality
Comments
–
EN
TxD
VCC
Off
On
NRST
RxD
Sleep
Init
Low
Low
Low
High1)
Low
High2)
Floating
Low
RxD “low” after a bus wake-up
High
RxD “high” after power-up or reset
Standby Low
High1)
On
On
High
High
High
–
Normal
High
Low
High
Low
High
RxD reflects the signal on the bus
TxD driven by the microcontroller
Operation
1) The TxD input has a pull-up structure to VCC and is default set to logical “high” if left open.
2) NRST is logical “low” during VCC undervoltage and while issuing a reset pulse to the microcontroller.
Data Sheet
7
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4.1.1
Normal Operation Mode
In Normal Operation Mode both the voltage regulator and the LIN transceiver are active. The TLE8457
supports data transmission rates up to 20 kBit/s: Data from the microcontroller is transmitted to the LIN bus
via the TxD input, while the receiver detects the data stream on the LIN bus and forwards it to the RxD output.
After entering Normal Operation Mode the TLE8457 requires a logical “high” signal for the time tto,rec on the
TxD input before releasing the data communication; The transmitter remains deactivated as long as the signal
on the TxD input pin remains logical “low”, preventing possible bus communication disturbance (see
Figure 4).
From Normal Operation Mode the TLE8457 can be set to Standby Mode or Sleep Mode.
EN
tMODE,HIGH
tMODE,LOW
t
VCC
t
t
t
t
NRST
Data transmission
RxD
TxD
tto,rec
Data transmission
Standby mode
Normal Operation mode
Sleep mode
TLE8457_NORMAL_MODE
Figure 4
Entering Normal Operation Mode, transition to Sleep Mode
4.1.2
Standby Mode
Standby Mode is a low power mode with ultra low quiescent current consumption while the voltage regulator
remains active, supplying for example a microcontroller in Stop mode. No LIN bus communication is possible,
the transmitter and the receiver are disabled. The low power receiver is still active and the device can wake-
up by a message on the LIN bus.
For changing the operation mode change from Standby Mode to Sleep Mode, the device has first to be set in
Normal Operation Mode, then in Sleep Mode (see Figure 4).
Data Sheet
8
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4.1.3
Init Mode
After a power-up event the TLE8457 enters Init Mode by default. In this mode the LIN transceiver is disabled,
but the voltage regulator is switched on. Following the linear voltage regulator has reached its nominal output
voltage VCC and the NRST output set “high”, the external microcontroller can change the mode to Normal
Operation Mode. If the Initialization Watchdog timer elapses before a “high” signal is detected on the EN input,
the TLE8457 will autonomously transition to Sleep Mode (see “Initialization Watchdog” on Page 15). The
Initialization Watchdog protection in Init Mode is always activated after starting up the voltage regulator and
after a reset pulse, triggered by the NRST output going “high”.
In Init Mode the TLE8457 indicates wake-up information on the RxD output. After a power-up and reset event,
the RxD output will be “high”. If the TLE8457 is in Init Mode after BUS wake-up detection, the RxD output will
be “low”.
Transitions to Init Mode can be controlled with the EN input when in Sleep Mode, or automatic forced after:
•
•
•
•
•
Bus wake-up event on the BUS pin.
Power-up event on the supply VS.
Power-on reset caused by the supply VS.
Voltage regulator failure event due to VS undervoltage.
Recovery of an over-temperature event on the voltage regulator.
VS
VS,PON
t
LIN
t
t
tWK,bus
VCC
NRST
t
RxD
EN
RxD signals Power-up
RxD signals Bus Wake-up
t
t
The device remains in Init mode while the
signal on the EN pin is „low“
Un-powered
Init mode
Normal Operation mode
TLE8457_INIT_MODE
Figure 5
Entering Init Mode after power-up
Data Sheet
9
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4.1.4
Sleep Mode
Sleep Mode is a low power mode with quiescent current consumption reduced to a minimum while the device
can still wake-up by a message on the LIN bus. Both the transceiver and the voltage regulator are switched off.
4.1.5
Bus Wake-up event
A bus wake-up event, also called remote wake-up, causes a transition from a low power mode to Init Mode. A
falling edge on the LIN bus, followed by a dominant bus signal for the time tWK,bus results in a bus wake-up
event. The mode change to Init Mode becomes active with the following rising edge on the LIN bus, when bus
voltage exceeds VBUS,wk. The TLE8457 remains in low power mode until it detects a state change on the LIN bus
from dominant to recessive (see Figure 6). In Init Mode a logical “low” signal on the RxD output indicates a bus
wake-up event.
In case the TLE8457 detects a bus wake-up event while already being in Init, the wake-up event will be
signalled with a logical “low” level on RxD and override the previous wake source (see Figure 5).
VBUS,wk
VBUS
VBUS,dom
tWK,bus
t
Sleep mode
Init mode
VCC,UV,ON
VCC
t
t
tRST
NRST
EN
t
TxD is „high“ because of internal
pull-up structure
TxD
RxD
t
t
RxD „low“ indicates a Bus
Wake-up event
TLE8457_BUS_WAKE
Figure 6
Bus wake-up behavior
Data Sheet
10
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4.1.6
Mode Transition via EN pin
The EN input is used for operation mode control of the TLE8457. By setting the EN input logical “high” for the
time tMODE,HIGH while being in Init Mode or Standby Mode, a transition to Normal Operation Mode will be
triggered.
If the voltage level at the EN input is set logical “high” while the TLE8457 is in Sleep Mode, a transition to Init
Mode is initiated. If the EN input is continuously held “high” though powering up the voltage regulator and the
following reset pulse, Normal Operation Mode will be entered.
From Normal Operation Mode the TLE8457 can be set to either Sleep Mode or Standby Mode. If the EN input is
set “low” for the time tMODE,LOW while the TxD input is held logical “high”, the mode will change to Standby
Mode. For a transition to Sleep Mode, the TxD must be set logical “low” before the time tMODE,LOW elapses after
EN goes “low” (see Figure 7). It is recommended to program a short delay time from EN is set “low” until TxD
is set “low”, for preventing driving the bus dominant though mode transition to Sleep Mode.
The EN input has an integrated pull-down resistor to ensure the device remains in a low power mode if the EN
input is left open. The EN input has an integrated hysteresis (see Figure 7).
The TLE8457 changes the operation modes regardless of the signal on the BUS pin. In the case of a short circuit
failure between the LIN bus and GND, resulting in a permanent dominant signal, the TLE8457 can be set to
Sleep Mode.
VEN,ON
EN hysteresis
EN
TxD
VEN,OFF
t
tMODE,LOW
tMODE,HIGH
tMODE,LOW
tMODE,HIGH
t
t
tRST
NRST
Normal Operation
mode
Normal Operation
mode
Normal Operation
mode
Standby mode
Sleep mode
Init mode
TLE8457_MODE_CONTROL
Figure 7
Operation mode control
The EN input is blocked while the TLE8457 is in Init Mode and NRST is “low”, no mode transitions to Normal
Operation Mode is possible while a reset pulse is issued. After the NRST output goes “high”, mode control with
the EN input is released. At the same time the Initialization Watchdog timer starts (see “Initialization
Watchdog” on Page 15).
Note:
If the TLE8457 is being forced to Sleep Mode by the Initialization Watchdog while the EN input is
externally being held at a logical “high” level, the device will reinitiate Init Mode after the VCC
voltage has been discharged below ~1 V. In such applications additional supervision means are
recommended.
Data Sheet
11
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4.2
Power Supplies
The TLE8457 is designed for being supplied by the battery line through an external reverse polarity protection
diode at the VS pin (see Figure 18). An input capacitor is needed for damping input line transients.
4.2.1
Power-Up / Power-Down
During power-up the TLE8457 will enter Init Mode when the VS supply reaches the power-on reset level VS,PON
The voltage regulator output VCC will track the VS supply voltage until VCC reaches its nominal voltage level. As
CC reaches the under-voltage level VCC,UVC, a reset pulse is issued, the NRST output will stay logical “low” for
.
V
the reset time tRST and then be set logical “high”. As NRST goes “high”, the EN input will become active and the
TLE8457 can change operating mode accordingly (see Table 2).
VS
VS,UV,ON
VS,UV,OFF
VCC
VS
VCC,UV
VCC,UV
VCC
VS,PON
VS,PON
t
tRST
NRST
EN
t
t
un-powered
Init mode
Normal Operation mode
Transmission blocked
Init mode
un-powered
TLE8457_VS_POWER-UP_DOWN
Figure 8
Power-up and power-down behavior
While powering down the TLE8457 will block the LIN transmitter if being in Normal Operation Mode as the VS
supply voltage falls below VS,UV,OFF. The voltage regulator will start tracking the VS supply voltage when falling
below VCC + VDR. As VCC falls below the undervoltage level VCC,UV the NRST output will be set logical “low” and
the TLE8457 will enter Init Mode. When the VS supply voltage falls below the power-on-reset level VS,PON the
voltage regulator will be disabled and the TLE8457 considered un-powered.
Data Sheet
12
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4.2.2
VS Undervoltage Detection
Undervoltage release level VS,UV,ON
VS
Undervoltage hysteresis VS,UV,hys
Undervoltage blocking level VS,UV,OFF
Power-on reset level VS,PON
Blanking time tblank,UV
t
Normal Operation mode
No communication possible
Normal Operation mode
TLE8457_VS_EARLY_UNDERVOLTAGE_A
Figure 9
VS early undervoltage detection
The TLE8457 has an undervoltage detection on the supply pin VS with two different thresholds:
•
•
In Normal Operation Mode the TLE8457 blocks the communication between the LIN bus and the
microcontroller when detecting an early undervoltage event. The RxD output will be set “high”. However,
no mode change will occur. After VS rises above the undervoltage release level VS,UV,REL, the bus
communication interface will be released when the signal on the TxD input goes “high”. See Figure 9.
In case the power supply VS drops below the power-on reset level VS,PON the TLE8457 not only blocks the
transceiver communication, it also changes the operation mode to Init mode after recovery of VS, see
Figure 10. In Init Mode the TLE8457 indicates a power-up event on the RxD pin. The power-on reset
detection is active in all operation modes.
Undervoltage release level VS,UV,ON
VS
Undervoltage hysteresis VS,UV,hys
Undervoltage blocking level VS,UV,OFF
Power-on reset level VS,PON
Blanking time tblank,UV
t
Init mode (EN = “low“)
Normal Operation mode (EN = “high“)
Power-down
Normal Operation mode
No communication possible
TLE8457_VS_UNDERVOLTAGE_A
Figure 10
VS undervoltage detection
Data Sheet
13
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4.3
Voltage Regulator
The TLE8457 has an integrated voltage regulator dedicated for supplying microcontrollers and/or on-board
sensors under harsh automotive environment conditions. It can supply a load current up to 70 mA with an
output voltage tolerance within ± 2%. Because of the ultra low current consumption, the TLE8457 is perfectly
suited for applications permanently connected to the battery supply. Additionally, in Sleep Mode, the voltage
regulator is switched off and an even lower quiescent current can be achieved.
The voltage regulator output is protected against undervoltage, overcurrent, over-temperature and power-up
failures. In case the load current rises above the functional range, for example during VCC short circuits, the
output current is limited to ICC,lim. Therefore the VCC output voltage will drop and a reset pulse will be issued if
falling below the undervoltage reset threshold.
The VCC supply output provides a stable supply voltage with output capacitors down to 1 µF, including low ESR
multi-layer ceramic capacitors.
4.3.1
VCC Undervoltage Detection
The TLE8457 has undervoltage detection on the voltage regulator VCC output. If the VCC voltage falls below the
undervoltage threshold VCC,UV for longer than detection time tdet,RST the NRST output will be set logical “low”
and the TLE8457 will automatically enter Init Mode and start the Initialization Watchdog (see Chapter 4.3.2
and Chapter 4.4).
tdet,RST
VCC,UV
VCC
t
Normal Operation mode (EN = „high“)
Standby mode (EN = „low“)
Normal Operation mode (EN = „high“)
Init mode (EN = „low“)
Init mode
tRST
NRST
t
NRST goes and stays „low“ as long
NRST stays „low“ for
additional Reset time tRST
as VCC is in undervoltage
TLE8457_VCC_UNDERVOLTAGE
Figure 11
VCC undervoltage detection
4.3.2
Reset Output
The NRST output is used for issuing reset pulses to for example an external microcontroller. In case of voltage
regulator undervoltage or over-temperature events the NRST output will go “low” and a mode transition to
Init Mode will be triggered. The NRST output will stay “low” until a complete recovery from the failure and
additionally for the reset time tRST, then go “high” (see Figure 11).
While the TLE8457 is in Init Mode and NRST is “low” mode transition to Normal Operation Mode is blocked.
The NRST pin is internally pulled up to VCC. If needed in the application, an additional external pull-up resistor
can be implemented.
Data Sheet
14
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4.4
Initialization Watchdog
The TLE8457 features an enhanced Initialization Watchdog timer for detection of local failures and error
handling for minimizing system current consumption. The benefit of this safety function is to prevent a
malfunctioning ECU being stuck in Init Mode with high current consumption and draining the car battery. The
Initialization Watchdog is only active in Init Mode, with the two use cases: VCC supply initialization and Normal
Operation Mode activation.
VS
VS,PON
1
VCC,UV
2
VCC
tRST
tto,rec
NRST
3
Watchdog
V
CC Supply Initialization
Normal Operation mode Activation
Timeout
1
Timeout
2
5
EN
4
Un-powered
Init mode
Normal Operation mode
If Timeout → forced transition to Sleep mode
If Timeout → forced transition to Sleep mode
1
VS exceeds the Power-on reset threshold → VCC Supply Initialization Watchdog is started
CC exceeds the VCC-Undervoltage threshold → Reset timer is started
2
V
3
4
5
Reset timer elapses → Normal Operation mode Activation Watchdog is started
Mode change with the EN input → Mode transition to normal mode
TxD must be „high“ for at least tto,rec after entering Normal mode for releasing the transmitter
TLE8457_WATCHDOG
Figure 12
Initialization Watchdog
VCC Supply Initialization
The VCC supply Initialization watchdog is detecting if local errors on the ECU is preventing the VCC supply to
power up correctly because of short circuits to ground or if components on the board are drawing too high
currents. The timer is started when the linear regulator is switched on after power-up events or after mode
transitions to Init mode triggered by either bus wake-up or the EN input being set “high” in Sleep Mode.
Additionally, the timer will start when detecting VCC undervoltage and after recovery from an overtemperature
event.
Data Sheet
15
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
In case the VCC voltage rise above the VCC,UV undervoltage threshold before the timer elapses, VCC is considered
successfully initialized and the timer is disabled. If the timer elapses before VCC powers up correctly, the
TLE8457 will autonomously transition to Sleep Mode.
Normal Operation Mode Activation
After the TLE8457 has generated a reset pulse the Initialization Watchdog is started for monitoring the
activation of Normal Operation Mode. The microcontroller must set the EN input “high” before the timer
elapses after tInit_WD, else the TLE8457 will autonomously transition to Sleep Mode.
tInit_WD
EN
t
tRST
NRST
t
Standby mode / Sleep mode / unpowered
Init mode
Sleep mode
TLE8457_INITIALIZATION_TIMEOUT
Figure 13
Enable activation time-out
Data Sheet
16
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4.5
LIN Transceiver
The LIN interface is a single wire, bi-directional bus, used for in-vehicle networks. The integrated LIN
transceiver of the TLE8457 is the interface between the microcontroller and the physical LIN bus (see
Figure 18). Data from the microcontroller is driven to the LIN bus via the TxD input. The transmit data stream
on the TxD input is converted to a LIN bus signal with optimized slew rates in order to minimize the
electromagnetic emission of the LIN network. The RxD output reads back the information from the LIN bus to
the microcontroller. The receiver has an integrated filter network for noise suppression from the LIN bus and
to increase the electromagnetic immunity level of the transceiver.
The LIN specification defines two valid bus levels (see Figure 14):
•
•
Dominant state with the LIN bus voltage level near GND, actively driven by a transceiver.
Recessive state with the LIN bus voltage pulled up to the supply voltage VS through the bus termination.
By setting the TxD input of the TLE8457 to a logical “low” signal, the transceiver generates a dominant level on
the BUS interface pin. The receiver reads back the signal on the LIN bus and indicates the dominant LIN bus
signal with a logical “low” on the RxD output to the microcontroller. By setting the TxD input “high”, the
transceiver sets the LIN interface pin to the recessive level. At the same time the recessive level on the LIN bus
is indicated by a logical “high” signal on the RxD output.
Every LIN network consists of a master node and one or more slave nodes. To configure the TLE8457 for
master node applications, a termination resistor of 1 kΩ and a diode must be connected between the LIN bus
and the power supply VS (see Figure 18).
VCC
TxD
t
Recessive
Dominant
Recessive
VS
Vth_REC
BUS
RxD
Vth_DOM
t
VCC
t
TLE8457_LIN_COMMUNICATION_A
Figure 14
LIN bus signals
Data Sheet
17
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Functional Description
4.5.1
TxD Time-out
The TxD time-out feature protects the LIN bus against permanent blocking in case the logical signal on the TxD
input is continuously “low”, caused by for example a malfunctioning microcontroller or a short circuit on the
printed circuit board. In Normal Operation Mode, a logical “low” signal on the TxD input for time t > tTxD
disables the transmitter’s output driver stage (see Figure 15). The receiver will remain active and the data on
the bus are still monitored on the RxD output.
The TLE8457 will release the output stage after a TxD time-out event first when detecting a logical “high”
signal on the respective TxD input for the time tto,rec
.
Recovery of the microcontroller error
Release after TxD time-out
TxD time-out due to e.g. microcontroller error
tTxD
tto,rec
Normal communication
Normal communication
TxD
t
VBUS
t
TLE8457_TXD_TIMEOUT_A
Figure 15
TxD time-out
4.5.2
Short Circuit
The BUS pin of TLE8457 can withstand short circuits to either GND or to the power supply VS. The integrated
over-temperature protection may disable the transmitter if a permanent short circuit on the BUS pin causes
the TLE8457 to overheat.
4.6
Over-temperature Protection
The TLE8457 has two independent over-temperature detectors for protecting the device against thermal
overstress; on the voltage regulator pass element and on the LIN bus transmitter. In case the junction
temperature at the LIN transmitter increase above the thermal shut down level TJSD, it will be disabled until
the transmitter’s junction temperature cools down below TJ < TJSD - ∆T. No other effect nor mode change will
occur. After a LIN transmitter over-temperature recovery the TxD input requires a logical “high” signal before
restarting data transmission.
If an over-temperature event is detected on the voltage regulator, it will be disabled and the NRST output will
be set “low”. During the over-temperature condition no functionality of the TLE8457 is available. After the
junction temperature cools down below TJ < TJSD - ∆T, the TLE8457 will automatically enter Init Mode and be
reactivated.
Note:
Depending on the over-temperature circumstance, either only the LIN transmitter will detect over-
temperature, for example due to bus short circuit or severe EMC injection, only the voltage regulator
detector or both (simultaneously or sequentially).
Data Sheet
18
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
General Product Characteristics
5
General Product Characteristics
5.1
Absolute Maximum Ratings
Table 3
Absolute Maximum Ratings Voltages, Currents and Temperatures1)
All voltages with respect to ground; positive current flowing into pin; unless otherwise specified
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
Voltage
Supply input voltage
Bus input voltage
Logic voltages at EN and TxD
VS
-0.3
-27
–
–
–
–
45
40
7.0
V
V
V
V
LIN Spec 2.2A (Par. 11) P_5.1.1
VBUS
Vlogic,in
–
–
–
P_5.1.2
P_5.1.3
P_5.1.4
-0.3
-0.3
Logic voltages at RxD and NRST Vlogic,out
VCC +
0.3
Voltage regulator output
Currents
VCC
-0.3
–
7.0
V
–
P_5.1.5
Output current at RxD
Output current at NRST
Temperature
IRxD
-15
–
–
–
15
10
mA
mA
–
–
P_5.1.6
P_5.1.7
INRST
Junction temperature
Storage temperature
ESD Susceptibility
Tj
-40
-55
–
–
150
150
°C
°C
–
–
P_5.1.8
P_5.1.9
Ts
Electrostatic discharge voltage VESD
at VS and BUS vs. GND
-8
–
–
–
–
8
kV
kV
V
Human Body Model
P_5.1.10
P_5.1.11
P_5.1.12
P_5.1.13
(100pF via 1.5 kΩ)2)
Electrostatic discharge voltage VESD
all other pins
-2
2
Human Body Model
(100pF via 1.5 kΩ)2)
Electrostatic discharge voltage VESD
corner pins
-750
-500
750
500
Charged Device
Model3)
Electrostatic discharge voltage VESD
at all other pins
V
Charged Device
Model3)
1) Not subject to production test, specified by design
2) ESD susceptibility, HBM according to ANSI/ESDA/JEDEC JS-001 (1.5 kΩ, 100pF)
3) ESD susceptibility, Charged Device Model “CDM” EIA / JESD 22-C101 or ESDA STM5.3.1
Notes
1. Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
2. Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Data Sheet
19
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
General Product Characteristics
5.2
Functional Range
Table 4
Operating Range
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
Supply Voltage
Supply Voltage range for Normal VS(nor)
Operation
5.5
3.0
–
–
28
40
V
V
LIN Spec 2.2A Param. P_5.2.12
10
Extended Supply Voltage Range VS(ext)
for Operation
Parameter deviations P_5.2.22
possible
Stability Requirement on VCC
1) 3)
Output capacitor range
Output capacitor ESR
Thermal parameter
CVCC
1.0
–
–
–
µF
,
P_5.2.3
P_5.2.4
2) 3)
ESR(CVCC) –
5.0
Ω
,
3)
Junction temperature
Tj -40
–
150
°C
P_5.2.5
1) The minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30%.
2) Relevant ESR value at f = 10 kHz.
3) Not subject to production test, specified by design.
Note:
Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics
table.
Data Sheet
20
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
General Product Characteristics
5.3
Thermal Characteristics
Note:
This thermal data was generated in accordance with JEDEC JESD51 standards. For more
information, please visit www.jedec.org.
Table 5
Thermal Resistance1)
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
P_5.3.1
Min.
Thermal Resistance, PG-DSO-8 Package Version
Junction ambient RthJA
Thermal Resistance, PG-TSON-8 Package Version
Max.
–
2)
2)
–
130
K/W
K/W
Junction ambient
Junction ambient
Junction ambient
RthJA
–
–
–
60
–
–
–
P_5.3.2
P_5.3.5
190
70
K/W Footprint only3)
K/W 300mm2 heatsink on P_5.3.6
PCB3)
Thermal Shutdown Junction Temperature
Thermal shutdown temperature TJSD
160
–
180
10
200
–
°C
K
TJSD increasing
JSD decreasing
P_5.3.3
P_5.3.4
Thermal shutdown hysteresis
ΔT
T
1) Not subject to production test, specified by design.
2) Specified RthJA value is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The product
(Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm board with 2 inner copper layers (2 x 70 μm Cu, 2 x 35 μm
Cu). Where applicable a thermal via array under the exposed pad contacted to the first inner copper layer.
3) Specified RthJA value is according to Jedec JESD51-3 at natural convection on FR4 1s0p board; The product
(Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm board with 1 inner copper layer (1 x 70 μm Cu).
Data Sheet
21
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Electrical Characteristics
6
Electrical Characteristics
6.1
Functional Device Characteristics
Table 6
Electrical Characteristics
5.5 V < VS < 28 V; RLIN = 500 Ω; -40°C < Tj < 150°C;
all voltages with respect to ground; positive current flowing into pin1); unless otherwise specified.
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min. Typ. Max.
Current Consumption
Current consumption at VS,
transmitter in Recessive state
IS,rec
0.1
0.1
70
–
0.3
1.0
71
0.7
3.0
73
mA ICC = 50 µA; Without RLIN
TxD = “high”; VBUS = VS
;
P_6.1.1
P_6.1.2
P_6.1.3
P_6.1.4
Current consumption at VS,
transmitter in Dominate state
IS,dom
mA ICC = 50 µA; Without RLIN;
TxD = “low”; VBUS = 0 V
Current consumption at VS,
Dominate State
IS,dom_max
mA ICC = 70 mA; Without RLIN;
TxD = “low”; VBUS = 0 V
Current consumption at VS in IS,standby
Standby Mode
20
40
µA Standby Mode;
ICC = 50 µA;
IS,standby = IS - ICC
VS = VBUS = 13.5 V;
Current consumption at VS in IS,Sleep
Sleep Mode
–
7
–
16
µA Sleep Mode; VS = 13.5 V;
P_6.1.5
P_6.1.6
V
BUS = VS; VCC = 0V
800 µA Sleep Mode;
VS = 13.5 V; VBUS = 0 V;
CC = 0V
Current consumption at VS in IS,SC_GND
Sleep Mode. Bus shorted to
GND
250
V
Power-up / Power-down
Power-on reset level on VS
VS,PON
–
–
3.0
V
–
P_6.1.7
P_6.1.8
P_6.1.9
P_6.1.10
Undervoltage threshold, VS on VS,UV,ON
Undervoltage threshold, VS off VS,UV,OFF
4.7
4.4
5.15 5.5
4.85 5.2
V
Rising edge
V
Falling edge
2)
Undervoltage hysteresis on VS VS,UV,hys
VS,UV,hys = VS,UV,ON - VS,UV,OFF
200 300
–
mV
2)
Undervoltage blanking time
Enable Input: EN
tBLANK,UV
–
10
–
µs
P_6.1.11
HIGH level input voltage
LOW level input voltage
Input hysteresis
VEN,ON
VEN,OFF
VEN,hys
REN
2
–
–
V
–
–
–
–
–
P_6.1.12
P_6.1.13
P_6.1.14
P_6.1.15
P_6.1.16
–
–
0.8
–
V
50
15
10
200
30
–
mV
kΩ
µs
Pull-down resistance
60
50
Delay time for mode change, tMODE,LOW
EN → “low”
2)
Delay time for mode change, tMODE,HIGH
EN → “high”
–
–
–
5
µs
P_6.1.17
P_6.1.18
Initialization Watchdog time tInit_WD
200
1000 ms
–
Data Sheet
22
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Electrical Characteristics
Table 6
Electrical Characteristics (cont’d)
5.5 V < VS < 28 V; RLIN = 500 Ω; -40°C < Tj < 150°C;
all voltages with respect to ground; positive current flowing into pin1); unless otherwise specified.
Parameter
Symbol
Ci EN
Values
Unit Note or Test Condition
Number
P_6.1.83
Min. Typ. Max.
2)
Input capacitance
–
5
–
pF
Reset Output: NRST
HIGH level leakage current
LOW level output voltage
Reset time
2)
INRST,H
VNRST
tRST
–
–
4
5
–
5
µA
P_6.1.19
P_6.1.20
P_6.1.21
P_6.1.22
–
0.4
16
20
V
INRST = 1.5 mA; VCC > 1 V;
10
10
ms
kΩ
–
–
Internal pull-up resistance
RNRST
Voltage Regulator Output, 5 V versions (TLE8457ASJ and TLE8457ALE): VCC
Output voltage
VCC
4.9
5.0
5.1
V
0.05 mA < ICC < 70 mA;
5.8 V < VS < 28 V
P_6.1.23
P_6.1.24
P_6.1.25
P_6.1.26
Output voltage drop
VDR
–
250 650 mV ICC < 70 mA
180 480 mV ICC < 50 mA
3)
VDR = VS - VCC
Output voltage drop, 50mA
VDR = VS - VCC
VDR,50
VDR,20
–
Output voltage drop, 20mA
–
80
200 mV ICC < 20 mA
VDR = VS - VCC
Output current limitation
Load regulation
ICC,lim
-150
–
–
-70
50
mA 0 V < VCC < 4.8 V
P_6.1.27
P_6.1.28
∆VCC,lo
25
mV 0.05 mA < ICC < 70 mA;
VS = 13.5 V
Line regulation
∆VCC,li
–
25
60
50
–
mV ICC = 1 mA;
5.8 V < VS < 28 V
dB 2); ICC = 50 mA; f = 100 Hz; P_6.1.30
Vr = 0.5 Vpp; VS = 13.5 V
P_6.1.29
Power supply ripple rejection PSRR
50
Undervoltage reset threshold VCC,UV
4.27 4.4
4.5
V
VCC decreasing
P_6.1.31
Undervoltage reset hysteresis VCC,UV,hy
Undervoltage detection time tdet,RST
50
1
100
–
–
mV
µs
–
P_6.1.32
P_6.1.33
20
2); VCC = 3.5 V
C
NRST = 20 pF
Voltage Regulator Output, 3.3 V versions (TLE8457BSJ and TLE8457BLE): VCC
Output voltage
VCC
3.234 3.300 3.366 V
0.05 mA < ICC < 70 mA;
4.066 V < VS < 28 V
P_6.1.34
P_6.1.35
P_6.1.36
P_6.1.37
P_6.1.38
Output voltage drop
VDR = VS - VCC
VDR
–
380 770 mV ICC < 70 mA
280 550 mV ICC < 50 mA
110 220 mV ICC < 20 mA
– -70 mA 0 V < VCC < 3.1 V
Output voltage drop, 50mA
VDR = VS - VCC
VDR,50
VDR,20
ICC,lim
–
Output voltage drop, 20mA
VDR = VS - VCC
–
Output current limitation
-150
Data Sheet
23
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Electrical Characteristics
Table 6
Electrical Characteristics (cont’d)
5.5 V < VS < 28 V; RLIN = 500 Ω; -40°C < Tj < 150°C;
all voltages with respect to ground; positive current flowing into pin1); unless otherwise specified.
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min. Typ. Max.
Load regulation
Line regulation
∆VCC,lo
∆VCC,li
–
25
25
60
50
50
–
mV 0.05 mA < ICC < 70 mA;
VS = 13.5 V
P_6.1.39
P_6.1.40
–
mV ICC = 1 mA;
4.066 V < VS < 28 V
dB 2); ICC = 50 mA; f = 100 Hz; P_6.1.41
Vr = 0.5 Vpp; VS = 13.5 V
Power supply ripple rejection PSRR
50
Undervoltage reset threshold VCC,UV
2.82 2.90 2.96
V
VCC decreasing
P_6.1.42
Undervoltage reset hysteresis VCC,UV,hy
Undervoltage detection time tdet,RST
33
1
66
–
–
mV
µs
–
P_6.1.43
P_6.1.44
20
2); VCC = 2.31 V
CNRST = 20 pF
Receiver Output: RxD
HIGH level output voltage
LOW level output voltage
Transmission Input: TxD
VRxD,H
VRxD,L
0.8
× VCC
–
–
–
V
V
IRxD = -2 mA; VBUS = VS
IRxD = 2 mA; VBUS = 0 V
P_6.1.45
P_6.1.46
–
0.2
× VCC
HIGH level input voltage range VTxD,H
0.7
× VCC
–
–
–
V
V
Recessive state
Dominant state
P_6.1.47
P_6.1.48
LOW level input voltage range VTxD,L
–
0.3
× VCC
Input hysteresis
VTxD,hys
RTxD
tTxD
200
15
8
–
–
mV
kΩ
ms
µs
–
–
P_6.1.49
P_6.1.50
P_6.1.51
P_6.1.52
P_6.1.93
Pull-up resistance
TxD time-out
30
18
–
60
28
10
–
–
2)
TxD recessive release time
Input capacitance
Bus Receiver: BUS
tto,rec
Ci
–
2)
–
5
pF
Receiver threshold voltage,
recessive to dominant edge
Vth_dom
VBUSdom
Vth_rec
0.4
× VS × VS
0.44
–
V
V
V
V
VS < 18V;
P_6.1.53
P_6.1.54
P_6.1.55
P_6.1.56
P_6.1.57
Receiver dominant state
-27
–
–
0.4
× VS
LIN Spec 2.2A (Par. 17)4)
VS < 18V;
Receiver threshold voltage,
dominant to recessive edge
0.56 0.6
× VS × VS
Receiver recessive state
VBUSrec
VBUS_CNT
0.6
× VS
–
40
LIN Spec 2.2A (Par. 18)5)
Receiver center voltage
0.475 0.5
0.525 V
LIN Spec 2.2A (Par. 19)6)
× VS × VS × VS
VS < 18V;
Data Sheet
24
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Electrical Characteristics
Table 6
Electrical Characteristics (cont’d)
5.5 V < VS < 28 V; RLIN = 500 Ω; -40°C < Tj < 150°C;
all voltages with respect to ground; positive current flowing into pin1); unless otherwise specified.
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min. Typ. Max.
Receiver hysteresis
VHYS
0.07 0.12 0.175 V
× VS × VS × VS
LIN Spec 2.2A (Par. 20)7)
VS < 18V;
P_6.1.58
P_6.1.59
Wake-Up threshold voltage
Bus Transmitter: BUS
VBUS,wk
0.4
0.5
0.6
V
–
× VS × VS × VS
Bus recessive output voltage VBUS,ro
0.8
–
VS
V
TxD = “high”; Open load P_6.1.60
× VS
Bus short circuit current
Leakage current
Leakage current
Leakage current
Leakage current
IBUS_LIM
40
85
-0.5
1
125 mA VBUS = 18 V;
LIN Spec 2.2A (Par. 12);
P_6.1.61
P_6.1.62
P_6.1.63
P_6.1.64
P_6.1.65
IBUS_NO_GND -1
IBUS_NO_BAT
IBUS_PAS_dom -1
–
5
–
5
mA VS = 0 V; VBUS = -12 V;
LIN Spec 2.2A (Par. 15)
–
µA VS = 0 V; VBUS = 18 V;
LIN Spec 2.2A (Par. 16)
-0.5
1
mA VS = 18 V; VBUS = 0 V;
LIN Spec 2.2A (Par. 13)
IBUS_PAS_rec
–
µA VS = 8 V; VBUS = 18 V;
Driver stage “off”;
TxD = “high”;
LIN Spec 2.2A (Par. 14)
Forward voltage serial diode VSerDiode
Bus pull-up resistance Rslave
0.4
20
–
–
1.0
60
V
ISerDiode = - 75 µA
LIN Spec 2.2A (Par.21)
P_6.1.66
40
–
kΩ LIN Spec 2.2A (Par. 26)
VTxD = 0 V; RLIN = 500 Ω;
V
P_6.1.67
P_6.1.68
Bus dominant output voltage VBUS,do
maximum load
1.4
VS = 5.5 V;
Bus dominant output voltage VBUS,do
maximum load
VTxD = 0 V; RLIN = 500 Ω;
VS = 18 V;
2)
P_6.1.98
P_6.1.95
–
–
–
2.0
30
V
Input capacitance
CiBUS
pF
Dynamic Transceiver Characteristics: BUS
Dominant time for Bus Wake- tWK,bus
up
30
–
150 µs
–
P_6.1.69
P_6.1.70
Propagation delay:
LIN Spec 2.2A (Par. 31)
LIN bus Dominant to RxD Low trx_pdft
LIN bus Recessive to RxD High trx_pdr
1
1
3.5
3.5
6
6
µs
µs
CRxD = 20 pF
Receiver delay symmetry
trx_sym
-2
–
2
µs
LIN Spec 2.2A (Par. 32)
P_6.1.71
t
C
rx_sym = trx_pdf - trx_pdr
RxD = 20 pF
;
Data Sheet
25
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Electrical Characteristics
Table 6
Electrical Characteristics (cont’d)
5.5 V < VS < 28 V; RLIN = 500 Ω; -40°C < Tj < 150°C;
all voltages with respect to ground; positive current flowing into pin1); unless otherwise specified.
Parameter
Symbol
Values
Unit Note or Test Condition
Number
P_6.1.72
Min. Typ. Max.
Duty cycle D1
D1
0.396 –
–
Duty cycle 1 8)
(for worst case at 20 kBit/s)
THRec(max) = 0.744 × VS;
THDom(max) =0.581 × VS;
VS = 7.0 … 18 V; tbi = 50 µs;
LIN Spec 2.2A (Par. 27)
D1 = tbus_rec(min) / 2 × tbit
Duty cycle D1
VS supply 5.5 V to 7.0 V
(for worst case at 20 kBit/s)
D1
D2
0.396 –
–
Duty cycle 1 8)
THRec(max) = 0.760 × VS;
THDom(max) = 0.593 × VS;
5.5 V < VS < 7.0 V;
tbit = 50 µs
Duty cycle 2 8)
THRec(min)= 0.422 × VS;
THDom(min)= 0.284 × VS;
VS = 7.6 … 18 V;
P_6.1.73
P_6.1.74
D1 = tbus_rec(min) / 2 × tbit
Duty cycle D2
(for worst case at 20 kBit/s)
–
–
–
–
0.581
D2 = tbus_rec(max) / 2 × tbit
t
bit = 50 µs;
LIN Spec 2.2A (Par. 28)
Duty cycle 2 8)
THRec(min)= 0.41 × VS;
THDom(min)= 0.275 × VS;
6.1 V < VS < 7.6 V;
tbit = 50 µs;
Duty cycle 38)
THRec(max) = 0.778 × VS;
THDom(max) =0.616 × VS;
VS = 7.0 … 18 V;
Duty cycle D2
VS supply 6.1 V to 7.6 V
(for worst case at 20 kBit/s)
D2
D3
0.581
P_6.1.75
P_6.1.76
D2 = tbus_rec(max) / 2 × tbit
Duty cycle D3
VS supply 7.0 V to 18.0 V
(for worst case at 10.4 kBit/s)
0.417 –
0.417 –
–
D3 = tbus_rec(min) / 2 × tbit
tbit = 96 µs;
LIN Spec 2.2A (Par. 29)
Duty cycle 3 8)
Duty cycle D3
D3
–
P_6.1.77
VS supply 5.5 V to 7.0 V
(for worst case at 10.4 kBit/s)
THRec(max) = 0.797 × VS;
THDom(max) = 0.630 × VS;
5.5 V < VS < 7.0 V;
D3 = tbus_rec(min) / 2 × tbit
tbit = 96 µs;
Data Sheet
26
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Electrical Characteristics
Table 6
Electrical Characteristics (cont’d)
5.5 V < VS < 28 V; RLIN = 500 Ω; -40°C < Tj < 150°C;
all voltages with respect to ground; positive current flowing into pin1); unless otherwise specified.
Parameter
Symbol
Values
Unit Note or Test Condition
Number
P_6.1.78
Min. Typ. Max.
Duty cycle D4
VS supply 7.6 V to 18.0 V
(for worst case at 10.4 kBit/s)
D4
–
–
–
0.590
Duty cycle 48)
THRec(min) = 0.389 × VS;
THDom(min) = 0.251 × VS;
VS = 7.6 … 18 V;
tbit = 96 µs;
LIN Spec 2.2A (Par. 30)
D4 = tbus_rec(max) / 2 × tbit
Duty cycle D4
D4
–
0.590
Duty cycle 48)
P_6.1.79
VS supply 6.1 V to 7.6 V
(for worst case at 10.4 kBit/s)
THRec(min) = 0.378 × VS;
THDom(min)= 0.242 × VS;
6.1 V < VS < 7.6 V;
D4 = tbus_rec(max) / 2 × tbit
tbit = 96 µs;
1) Load current on VCC specified positive direction out of pin.
2) Not subject to production test, specified by design.
3) Measured when the output voltage VCC has dropped 100 mV from the nominal value obtained at VS = 13.5V
4) Minimum limit specified by design.
5) Maximum limit specified by design.
6) VBUS_CNT = (Vth_dom + Vth rec) / 2;.
7) VHYS = Vth_rec - Vth_dom
.
8) Bus load according to LIN Spec 2.2A:
Load 1 = 1 nF / 1 kΩ = CBUS / RLIN
Load 2 = 6.8 nF / 660 Ω = CBUS / RLIN
Load 3 = 10 nF / 500 Ω = CBUS / RLIN
Data Sheet
27
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Electrical Characteristics
6.2
Diagrams
VCC
VS
CVCC
100 nF
NRST
CNRST
EN
RLIN
TxD
BUS
RxD
CRxD
CBus
GND
TLE8457_TEST_CIRCUIT_A
Figure 16
Simplified test circuit for dynamic transceiver characteristics
tBit
tBit
tBit
TxD
(input to transmitting node)
tBus_dom(max)
tBus_rec(min)
THRec(max)
THDom(max)
Thresholds of receiving node 1
Thresholds of receiving node 2
VSUP
(Transceiver supply of
transmitting node)
THRec(min)
THDom(min)
tBus_dom(min)
tBus_rec(max)
RxD
(output of receiving node 1)
trx_pdf(1)
trx_pdr(1)
RxD
(output of receiving node 2)
trx_pdr(2)
trx_pdf(2)
Duty Cycle D1, D3 = tBUS_rec(min) / (2 x tBIT
)
Duty Cycle D2, D4 = tBUS_rec(max) / (2 x tBIT
)
TLE8457_LIN_TIMING_DIAGRAM_A
Figure 17
Timing diagram for dynamic transceiver characteristics
Data Sheet
28
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Application Information
7
Application Information
Note:
7.1
The following information is given as a hint for the implementation of the device only and shall not
be regarded as a description or warranty of a certain functionality, condition or quality of the device.
Application Example
VBat
5 V or 3.3V
VI
VQ
VCC
22μF
100nF
1μF
100nF
TLE42xx
GND
LIN
BUS
INH
Pull-Up
to MCU
Supply
2.4kΩ
7
8
Micro Controller
e.g XC22xx
VS
INH
100nF
TLE7258
1
4
2
RxD
TxD
1kΩ
6
1
4
EN
BUS
1nF
GND
GND
5
ECU_1
8
VS
VCC
VCC
22μF
100nF
1μF
100nF
TLE8457
5
7
6
2
Micro Controller
e.g XC22xx
RxD
NRST
TxD
BUS
EN
220pF
GND
3
GND
ECU_X
Figure 18
Simplified application circuit
Data Sheet
29
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Application Information
7.2
ESD Robustness according to IEC61000-4-2
Test for ESD robustness according to IEC61000-4-2 (150 pF, 330 Ω) have been performed. The results and test
conditions are available in a separate test report.
Table 7
ESD Robustness according to IEC61000-4-2
Performed Test
Results Unit
Remarks
Electrostatic discharge voltage at pin VS, BUS versus GND
+8
kV
1)Positive pulse
1)Negative pulse
Electrostatic discharge voltage at pin VS, BUS versus GND
-8
kV
1) ESD susceptibility according LIN EMC 1.3 Test Specification, Section 4.3. (IEC 61000-4-2) - Tested by external test
house.
7.3
Transient Robustness according to ISO 7637-2
Test for transient robustness according to ISO 7637-2 have been performed. The results and test conditions
are available in a separate test report.
Table 8
Automotive Transient Robustness according to ISO 7637-2
Performed Test
Pulse 1
Results
-100
Unit
V
V
V
V
Pulse 2
+75
Pulse 3a
-150
+100
Pulse 3b
7.4
LIN Physical Layer Compatibility
As the LIN physical layer is independent from higher LIN layers (for example LIN protocol layer), all nodes with
a LIN physical layer according to this revision can be mixed with LIN physical layer nodes, which are according
to older revisions (LIN 1.0, LIN 1.1, LIN 1.2, LIN 1.3, LIN 2.0, LIN 2.1 and LIN 2.2), without any restrictions.
Data Sheet
30
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Package Outlines
8
Package Outlines
0.35 x 45˚
1)
4-0.2
C
1.27
B
0.1
±0.25
0.64
+0.1 2)
-0.06
0.41
±0.2
6
M
M
0.2
A B 8x
0.2
C 8x
8
5
4
1
A
1)
5-0.2
Index Marking
1) Does not include plastic or metal protrusion of 0.15 max. per side
2) Lead width can be 0.61 max. in dambar area
GPS01181
Figure 19
PG-DSO-8 (Plastic Dual Small Outline PG-DSO-8)
±±0.
204
±±0.
±0.
±±0.
±±0.
±±0.
3
±03
±038
±0±5
Z
±±0.
±065
Pin . Marking
±±0.
Pin . Marking
Z (4:.)
±03
PG-TSON-8-.-PO V±.
±0±7 MIN0
Figure 20
PG-TSON-8 (Plastic Thin Small Outline Nonleaded PG-TSON-8)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant
with government regulations the device is available as a green product. Green products are RoHS-Compliant
(i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
For further information on alternative packages, please visit our website:
http://www.infineon.com/packages.
Dimensions in mm
Data Sheet
31
Rev. 1.0
2016-08-05
TLE8457
LIN Transceiver with integrated Voltage Regulator
Revision History
9
Revision History
Table 9
Revision
1.0
Revision History
Data
Changes
Data Sheet created
2016-08-05
Data Sheet
32
Rev. 1.0
2016-08-05
Please read the Important Notice and Warnings at the end of this document
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IMPORTANT NOTICE
The information given in this document shall in no For further information on technology, delivery terms
Edition 2016-08-05
Published by
Infineon Technologies AG
81726 Munich, Germany
event be regarded as a guarantee of conditions or and conditions and prices, please contact the nearest
characteristics ("Beschaffenheitsgarantie").
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With respect to any examples, hints or any typical
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hereby disclaims any and all warranties and liabilities
of any kind, including without limitation warranties of
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In addition, any information given in this document is
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