LTC1156CSW [Linear]
LTC1156 - Quad High Side Micropower MOSFET Driver with Internal Charge Pump; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C;
| 型号： | LTC1156CSW |
| 厂家： | 
Linear |
| 描述： | LTC1156 - Quad High Side Micropower MOSFET Driver with Internal Charge Pump; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C 驱动器 泵 |
| 文件： | 总8页 (文件大小：233K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTC1156
Quad High Side
Micropower MOSFET Driver
with Internal Charge Pump
U
DESCRIPTIO
EATURE
S
F
■
■
■
■
■
■
■
■
■
No External Charge Pump Components
Fully Enhances N-Channel Power MOSFETs
16 Microamps Standby Current
The LTC1156 quad High side gate driver allows using low
cost N-channel FETs for high side switching applications.
An internal charge pump boosts the gate drive voltage
above the positive rail, fully enhancing an N-channel MOS
switch with no external components. Micropower opera-
tion, with 16µA standby current and 95µA operating
current, allows use in virtually all systems with maximum
efficiency.
95 Microamps ON Current
Wide Power Supply Range 4.5V to 18V
Controlled Switching ON and OFF Times
Replaces P-Channel High Side Switches
Compatible with Standard Logic Families
Available in 16-pin SOL Package
Included on chip is independent over-current sensing to
provide automatic shutdown in case of short circuits. A
time delay can be added to the current sense to prevent
false triggering on high in-rush current loads.
O U
PPLICATI
S
A
■
■
■
■
■
■
■
Laptop Computer Power Switching
SCSI Termination Power Switching
Cellular Telephone Power Management
P-Channel Switch Replacement
Battery Charging and Management
Low Frequency H-Bridge Driver
Stepper Motor and DC Motor Control
The LTC1156 operates off of a 4.5V to 18V supply and is
well suited for battery-powered applications, particularly
where micropower “sleep” operation is required.
The LTC1156 is available in both 16-pin DIP and 16-pin
SOL packages.
U
O
TYPICAL APPLICATI
Laptop Computer Power Management
Standby Supply Current
5V
100
+
V
= V = V = V = 0V
= 25°C
IN1 IN2 IN3 IN4
90
80
70
60
50
40
30
20
10
0
0.1µF
*30mΩ
10µF
T
J
100k
V
V
S
S
DS1
DS2
DS3
DS4
5V
HARD DISK
Si9956DY
Si9956DY
DRIVE
LTC1156
IN1
IN2
IN3
IN4
G1
G2
G3
G4
FLOPPY DISK
DRIVE
CONTROL
LOGIC
OR µP
DISPLAY
GND GND
0
10
15
5
20
SUPPLY VOLTAGE (V)
PERIPHERAL
LTC1156 G01
ALL COMPONENTS SHOWN ARE SURFACE MOUNT. MINIMUM PARTS COUNT
SHOWN. CURRENT LIMITS CAN BE SET SEPARATELY AND TAILORED TO
INDIVIDUAL LOAD CHARACTERISTICS.
1156 TA01
* IMS026 INTERNATIONAL MANUFACTURING SERVICES, INC. (401) 683-9700
1
LTC1156
W W W
U
ABSOLUTE AXI U RATI GS
Supply Voltage ....................................................... 22V
Input Voltage ..................... (VS + 0.3V) to (GND – 0.3V)
Gate Voltage ....................... (VS + 24V) to (GND – 0.3V)
Current (Any Pin)................................................. 50mA
Operating Temperature Range
LTC1156C ............................................. 0°C to 70°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................. 300°C
W
U
/O
PACKAGE RDER I FOR ATIO
TOP VIEW
TOP VIEW
ORDER PART
ORDER PART
NUMBER
1
2
3
4
5
6
7
8
G1
16
15
14
13
12
11
10
9
NUMBER
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GND
IN1
GND
IN1
G1
DS1
G2
DS1
G2
V
S
V
S
LTC1156CN
LTC1156CS
DS2
DS3
G3
IN2
IN3
IN2
IN3
DS2
DS3
G3
GND
IN4
GND
IN4
DS4
G4
DS4
G4
V
V
S
S
S PACKAGE
16-LEAD PLASTIC SOL
N PACKAGE
16-LEAD PLASTIC DIP
TJMAX = 110°C, θJA = 120°C/W
TJMAX = 110°C, θJA = 130°C/W
Consult factory for Industrial and Military grade parts.
VS = 4.5V to 18V, TA = 25°C, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
(Note 1)
V = 5V, V = 0V (Note 2)
MIN
TYP
MAX
18
UNITS
V
S
Supply Voltage
●
4.5
V
µA
µA
µA
V
I
I
I
Quiescent Current OFF
Quiescent Current ON
Quiescent Current ON
Input High Voltage
Input Low Voltage
Input Current
16
95
40
Q
Q
Q
S
IN
V = 5V, V = 5V (Note 3)
125
400
S
IN
V = 12V, V = 5V (Note 3)
180
S
IN
V
●
●
●
2.0
INH
INL
V
0.8
V
I
0V < V < V
S
±1.0
µA
pF
IN
IN
C
V
Input Capacitance
5
IN
Drain Sense Threshold
Voltage
80
75
100
100
120
125
mV
mV
SEN
●
●
I
Drain Sense Input Current
0V < V
< V
S
±0.1
µA
SEN
SEN
V
GATE
– V Gate Voltage Above Supply
V = 5V
●
●
●
6.0
7.5
15
7.0
8.3
18
9.0
15.0
25
V
V
V
S
S
V = 6V
S
V = 12V
S
t
Turn-ON Time
V = 5V, C
Time for V
Time for V
= 1000pF
ON
S
GATE
GATE
> V + 2V
50
200
250
1100
750
2000
µs
µs
S
> V + 5V
GATE
S
V = 12V, C
S
= 1000pF
GATE
Time for V
Time for V
> V + 5V
50
120
180
450
500
1200
µs
µs
GATE
GATE
S
> V + 10V
S
2
LTC1156
VS = 4.5V to 18V, TA = 25°C, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
t
Turn-OFF Time
V = 5V, C
Time for V
= 1000pF
< 1V
OFF
S
GATE
GATE
10
10
36
26
60
60
µs
µs
V = 12V, C
= 1000pF
GATE
S
Time for V
< 1V
GATE
t
Short Circuit Turn-OFF Time
V = 5V, C
Time for V
= 1000pF
< 1V
SC
S
GATE
GATE
5
5
16
16
30
30
µs
µs
V = 12V, C
= 1000pF
< 1V
S
GATE
Time for V
GATE
The
●
denotes specifications which apply over the full operating
Note 2: Quiescent current OFF is for all channels in OFF condition.
Note 3: Quiescent current ON is per driver and is measured independently.
temperature range.
Note 1: Both V pins (3 and 8) must be connected together, and both
S
ground pins (1 and 6) must be connected together.
U W
TYPICAL PERFOR A CE CHARACTERISTICS
High Side Gate Voltage
Standby Supply Current
Supply Current per Channel ON
100
90
80
70
60
50
40
30
20
10
0
1000
900
800
700
600
500
400
300
200
100
0
24
22
20
18
16
14
12
10
8
V
= V = V = V = 0V
IN2 IN3 IN4
ONE INPUT = ON
IN1
T = 25°C
OTHER INPUTS = OFF
J
T = 25°C
J
6
4
0
10
15
5
20
0
10
15
5
20
0
10
15
5
20
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
LTC1156 G01
1156 G02
LTC1156 G03
Low Side Gate Voltage
Standby Supply Current
Supply Current per Channel ON
100
90
80
70
60
50
40
30
20
10
0
1000
900
800
700
600
500
400
300
200
100
0
30
27
24
21
V
IN1
= V = V = V = 0V
IN2 IN3 IN4
ONE INPUT = ON
OTHER INPUTS = OFF
18
15
12
9
V
S
= 18V
V
= 18V
S
6
V
= 5V
S
V
= 5V
3
0
S
–50
0
25
50
75 100 125
25
–50
0
25
50
75 100 125
25
0
2
4
6
8
10
TEMPERATURE (°C)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
1156 G04
1156 G05
1158 G06
3
LTC1156
TYPICAL PERFOR A CE CHARACTERISTICS
U W
Turn-OFF Time
Short Circuit Turn-OFF Delay Time
Turn-ON Time
1000
900
800
700
600
500
400
300
200
100
0
50
45
40
35
30
25
20
15
10
5
50
45
40
35
30
25
20
15
10
5
C
GATE
= 1000pF
C
= 1000pF
C
= 1000pF
GATE
TIME FOR V
GATE
< 1V
TIME FOR V
< 1V
GATE
= V – 1V
GATE
V
SEN
S
NO EXTERNAL DELAY
V
= 5V
GS
V
GS
= 2V
0
0
0
10
15
0
10
15
5
20
0
10
15
5
20
5
20
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
1156 G07
1156 G09
1156 G08
W
BLOCK DIAGRA
V
S
ANALOG SECTION
DRAIN
SENSE
100mV
REFERENCE
10µs
DELAY
COMP
LOW STANDBY
CURRENT
REGULATOR
GATE CHARGE
AND DISCHARGE
CONTROL LOGIC
GATE
ANALOG
DIGITAL
R
INPUT
LATCH
VOLTAGE
REGULATORS
TTL-TO-CMOS
CONVERTER
ONE
SHOT
IN
OSCILLATOR
AND CHARGE
PUMP
S
FAST/SLOW
GATE CHARGE
LOGIC
GND
1156 BD
U
OPERATIO
TTL and CMOS Compatible Inputs
The LTC1156 contains four independent power MOSFET
gate drivers and protection circuits (refer to the Block
Diagram for detail). Each section of LTC1156 consists of
the following functional blocks:
Each driver input has been designed to accommodate a
wide range of logic families. The input threshold is set at
1.3V with approximately 100mV of hysteresis.
4
LTC1156
U
OPERATIO
A voltage regulator with low standby current provides
continuous bias for the TTL to CMOS converters. The TTL
to CMOS converter output enables the rest of the circuitry.
In this way the power consumption is kept to a minimum
in the standby mode.
Drain Current Sense
The LTC1156 is configured to sense the drain current of
the power MOSFET in high side applications. An internal
100mV reference is compared to the drop across a sense
resistor (typically 0.002Ω to 0.1Ω) in series with the drain
lead. If the drop across this resistor exceeds the internal
100mV threshold, the input latch is reset and the gate is
quickly discharged by a large N-channel transistor. A
simple RC network can be added to delay the over-current
protection so that large in-rush current loads such as
lamps or capacitors can be started.
Internal Voltage Regulation
The output of the TTL to CMOS converter drives two
regulated supplies which power the low voltage CMOS
logicandanalogblocks.Theregulatoroutputsareisolated
from each other so that the noise generated by the charge
pump logic is not coupled into the 100mV reference or the
analog comparator.
Supply and Ground Pins
The two supply pins (3 and 8) of the LTC1156 must be
connected together at all times and the two ground pins (1
and 6) must be connected together at all times. The two
supply pins should be connected to the “top” of the drain
current sense resistor/s to ensure accurate sensing.
Gate Charge Pump
Gate drive for the power MOSFET is produced by an
adaptive charge pump circuit which generates a gate
voltage substantially higher than the power supply volt-
age. The charge pump capacitors are included on chip and
thereforenoexternalcomponentsarerequiredtogenerate
the gate drive.
For further applications information, see the LTC1155
Dual High Side Micropower MOSFET Driver data sheet.
U
O
TYPICAL APPLICATI S
4-Cell Extremely Low Voltage Drop Regulator and Three Load
Switches with Short-Circuit Protection and 20µA Standby Current
+
+
5.2V TO 6V
4-CELL NiCd
BATTERY PACK
47µF
**0.03Ω
0.1µF
3.3A MAX
IRLR024
100k
100k
V
V
S
S
DS2
DS3
DS4
DS1
G1
5V/2A
SWITCHED
0.1µF
REG ON/OFF
FAULT
LTC1156
IN1
IN2
IN3
IN4
G2
G3
G4
CONTROL
LOGIC
2 × Si9956DY
200pF
GND GND
1
10k
1N4148
3
8
7
5V
5V
5V
LT1431
LOAD LOAD LOAD
4
+
* CAPACITOR ESR LESS THAN 0.5Ω
** RCS02 ULTRONIX (303) 242-0810
6
5
*470µF
1156 TA02
5
LTC1156
TYPICAL APPLICATI S
U
O
24V to 30V Quad Industrial Switch with Thermal Shutdown
24V – 30V
+
10µF
50V
2k
RT1*
+
100°C
1µF
25V
1N4746
18V
V
S
V
S
DS1
DS2
DS3
DS4
IRF530
IRF530
240k
5V
LTC1156
IN1
IN2
IN3
IN4
G1
G2
G3
G4
M
CONTROL
LOGIC
OR µP
IRF530
IRF530
GND GND
1156 TA03
* KEYSTONE RL2006-100-100-30-PT MOUNT ON HEATSINK.
Automotive Triple High Side Switch with Reverse Battery Interrupt, Short-Circuit
and High-Voltage Transient Protection (20µA Standby Current)
6V – 16V
1N4148
+
18V
1N4746
100k
0.1µF
15V
1N5245A
10µF
IRFZ44
150Ω
200k
V
G1
V
DS1
S
S
100k
DS2
G2
3 × IRFZ24
IN1
IN2
IN3
IN4
30k
30k
24V
100k
100k
OUTPUT 1
OUTPUT 2
OUTPUT 3
1N5252A
INPUT 1
INPUT 2
INPUT 3
LTC1156
DS3
G3
24V
1N5252A
DS4
G4
100k
30k
GND
GND
24V
3 × 0.1µF
1N5252A
150Ω
1/2W
1156 TA04
6
LTC1156
U
O
TYPICAL APPLICATI S
4-Phase Stepper Motor Driver with Short-Circuit Protection
6V
+
0.05Ω
0.01µF
2A MAX
1N4001
10µF
30k
V
V
S
S
DS1
DS2
DS3
DS4
A
B
C
D
5V
Si9956DY
Si9956DY
1N4001
1N4001
LTC1156
IN1
G1
G2
G3
G4
IN2
IN3
IN4
CONTROL
LOGIC
GND GND
1N4001
1156 TA05
* STR101G TECHNO (818) 781-1642
Full H-Bridge Driver with Short-Circuit Protection and 16µA Standby Current
Low Frequency Operation (<100Hz)
5V
+
0.1µF
DS1
0.1µF
0.05Ω
10µF
0.05Ω
100k
V
V
S
S
DS2
DS3
DS4
100k
Si9956DY
Si9956DY
IN1
LTC1156
**
LOAD
G1
G2
G3
G4
IN2
IN3
IN4
CONTROL
LOGIC
OR µP
GND GND
* STR101G TECHNO (818) 781-1642
** SOFTWARE (OR HARDWARE) DELAYS SHOULD BE PROVIDED TO AVOID
CROSS-CONDUCTION. ALL COMPONENTS SHOWN ARE SURFACE MOUNT.
1156 TA06
For more Typical Applications, see LTC1155 data sheet.
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of circuits as described herein will not infringe on existing patent rights.
7
LTC1156
U
PACKAGE DESCRIPTIO Dimesions in inches (millimeters) unless otherwise noted.
N Package
16-Lead Plastic DIP
0.770
(19.558)
0.300 – 0.325
0.130 ± 0.005
0.045 – 0.065
(7.620 – 8.255)
(3.302 ± 0.127)
(1.143 – 1.651)
12
14
13
10
9
16
15
11
0.015
0.260 ± 0.010
(6.604 ± 0.254)
(0.381)
MIN
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
+0.025
2
1
3
4
5
6
7
8
0.325
–0.015
0.125
(3.175)
MIN
0.045 ± 0.015
(1.143 ± 0.381)
0.018 ± 0.003
(0.457 ± 0.076)
+0.635
8.255
(
)
–0.381
N16 1291
0.100 ± 0.010
(2.540 ± 0.254)
S Package
16-Lead Plastic SOL
0.398 – 0.413
(10.109 – 10.490)
0.291 – 0.299
(7.391 – 7.595)
0.005
(0.127)
RAD MIN
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
15 14
12
10
9
16
13
11
0.010 – 0.029
× 45°
(0.254 – 0.737)
0° – 8° TYP
0.050
(1.270)
TYP
0.394 – 0.419
(10.008 – 10.643)
SEE NOTE
0.009 – 0.013
0.004 – 0.012
(0.102 – 0.305)
(0.229 – 0.330)
SEE NOTE
0.014 – 0.019
0.016 – 0.050
(0.406 – 1.270)
(0.356 – 0.483)
TYP
NOTE:
PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS.
2
3
5
7
8
1
4
6
SOL16 12/91
LT/GP 0694 5K REV A • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
8
●
●
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
LINEAR TECHNOLOGY CORPORATION 1994
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