MAX14529 [MAXIM]
Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D/D-;
| 型号： | MAX14529 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D/D- |
| 文件： | 总9页 (文件大小：266K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-4459; Rev 0; 2/09
Overvoltage Protection with USB Charger
Detection, LDO, and ESD Protection on D+/D-
29/MAX14530E
General Description
Features
The MAX14529E/MAX14530E are overvoltage-protec-
tion devices with USB charger detection, a low-dropout
(LDO) regulator, and ESD protection. These devices
♦ Input Voltage Protection Up to 28V
♦ High-Current USB Charger Detection
♦ 3.3V, 100mA LDO
feature a low 35mΩ (typ) R
internal FET switch and
ON
protect low-voltage systems against voltage faults up to
28V. When the input voltage exceeds the overvoltage
threshold, the internal FET switch is turned off to pre-
vent damage to the protected components.
♦ Preset Overvoltage Protection Trip Level
5.75V (MAX14529E)
6.8V (MAX14530E)
♦ Integrated Low R
35mΩ (typ) FET Switch
ON
The charger detection detects a short between the USB
D+ and D- data lines. If the data lines are shorted
together and a dedicated charger is attached, the
phone draws more than 500mA to charge the battery.
♦ Low-Capacitance USB High-Speed Data Line ESD
Protection (3pF)
15ꢀV Human Body Model (HBM)
15ꢀV IEC 61000-4-2 Air ꢁap
8ꢀV IEC 61000-4-2 Contact
The overvoltage thresholds (OVLO) are preset to 5.75V
(MAX14529E) or 6.8V (MAX14530E).
♦ Thermal-Shutdown Protection
The LDO output (LOUT) is powered from OUT and sup-
plies 3.3V to the USB transceiver. The LDO features a
100mA (min) current capability and low output noise.
♦ 12-Bump, 1.5mm x 2mm WLP Pacꢀage
♦ -40°C to +85°C Operating Temperature Range
The MAX14529E/MAX14530E feature 15ꢀV ꢁBM ESD
protection with low (3pF) capacitance suitable for
ꢁi-Speed USB 2.0.
Ordering Information/
Selector Guide
Both devices are offered in a small 12-bump, 1.5mm x
2mm WLP pacꢀage and operate over the -40°C to
+85°C extended temperature range.
PIN-
PACKAꢁE
PART
TOP MARK OVLO (V)
MAX14529EEWC+T 12 WLP
MAX14530EEWC+T 12 WLP
AAP
AAQ
5.75
6.8
Applications
Cell Phones
Note: Both devices are specified over the -40°C to +85°C oper-
ating temperature range.
+Denotes a lead(Pb)-free/RoꢁS-compliant pacꢀage.
T = Tape and reel.
MP3 Players
PDAs and Palmtop Devices
Typical Operating Circuit
Pin Configuration
TOP VIEW
(BUMPS ON BOTTOM)
PHONE
LOAD
IN
OUT
OUT
CHARGER
0.1μF
1
2
3
4
V
BUS
IN
D+
D-
D+
D-
USB
CONNECTOR
+
MAX14529E/MAX14530E
V
IO
V
IO
MAX14529E/
MAX14530E
A
B
C
10kΩ
10kΩ
IN
IN
VOK
CDET
LOUT
D-
GND
D+
VOK
CDET
OEN
MICRO-
PROCESSOR
LEN
OEN
OUT
LEN
OUT
V
CC
LOUT
GND
1.5kΩ
V
PU
1μF
USB 2.0
TRANSCEIVER
D+
D-
WLP
1.5mm x 2mm
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Overvoltage Protection with USB Charger
Detection, LDO, and ESD Protection on D+/D-
ABSOLUTE MAXIMUM RATINꢁS
IN to GND...............................................................-0.3V to +30V
OUT to GND.................................-0.3V to min (+12V, IN + 0.3V)
OEN, LEN, VOK, CDET to GND ...............................-0.3V to +6V
LOUT to GND ...........................................................-0.3V to +6V
Continuous Current IN to OUT per Ball...............................1.74A
Junction-to-Ambient Thermal Resistance (θ )
JA
(Note 1) ......................................................................118°C/W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature .......................................-40°C to +150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Continuous Power Dissipation (T = +70°C)
A
12-Bump WLP (derate 8.5mW/°C above +70°C).........678mW
Note 1: Pacꢀage thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on pacꢀage thermal considerations, go to www.maxim-ic.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V = 2.2V to 28V, T = T
to T
, unless otherwise noted. Typical values are at V = +5V, T = +25°C.) (Note 2)
IN
A
MIN
MAX
IN
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OVERVOLTAꢁE PROTECTION
Input-Voltage Range
V
2.2
5.6
6.6
5.4
6.5
28
5.9
V
IN
MAX14529E
MAX14530E
MAX14529E
MAX14530E
5.75
6.8
V
V
rising
falling
IN
IN
6.94
29/MAX14530E
Overvoltage Trip Level
V
V
OVLO
IN Overvoltage Locꢀout ꢁysteresis
Supply Current
1
%
V
V
V
= 0, V
= 5V, 2.2V < V < V
95
145
50
35
190
300
120
60
OEN
OEN
LEN
IN
OVLO
I
= V
= V
= 0, 2.2V < V < V
µA
IN
LEN
LEN
IN
OVLO
= 5V, 2.2V < V < V
OVLO
OEN
IN
Internal FET R
R
I
= 100mA, V = 4.5V to 5.5V
mΩ
ON
ON
LOAD
IN
Maximum Capacitor on OUT
LOW-DROPOUT REꢁULATOR
LDO Output Voltage
LOUT Line Regulation
LOUT Load Regulation
Current Limit
C
1000
µF
OUTMAX
V
V
V
= 5V
3.219
100
3.3
3.383
3.3
V
LOUT
IN
IN
= 4.2V to 6V
1.65
0.33
mV/V
mV/mA
mA
I
= 0.1mA to 100mA
0.66
400
OUT
Dropout Voltage
I
= 50mA (Note 3)
300
355
500
mV
OUT
LOUT Noise
f = 10ꢀꢁz to 100ꢀꢁz, I
= 1mA
µV
RMS
OUT
CDET FILTER
Cutoff Frequency
f
0.6
2.5
ꢀꢁz
FILT
D- Rising DC Threshold
D- Falling DC Threshold
DIꢁITAL SIꢁNALS
Open-Drain Output Low Voltage
V
V
2.375
2.625
V
V
TꢁFILT,R
TꢁFILT,F
2.35
V
I
= 1mA
SINK
0.4
1
V
OL
V
= V
= 5V, VOK and CDET high
LEN
OEN
Open-Drain Leaꢀage Current
Input ꢁigh Voltage
µA
V
impedance
V
1.4
Iꢁ
2
_______________________________________________________________________________________
Overvoltage Protection with USB Charger
Detection, LDO, and ESD Protection on D+/D-
29/MAX14530E
ELECTRICAL CHARACTERISTICS (continued)
(V = 2.2V to 28V, T = T
to T
, unless otherwise noted. Typical values are at V = 5V, T = +25°C.) (Note 2)
IN
A
MIN
MAX
IN
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
0.4
UNITS
V
Input Low Voltage
V
IL
Input Leaꢀage Current
V
= V
= 5V
LEN
-1
+1
µA
OEN
TIMINꢁ CHARACTERISTICS (Figure 1)
Debounce Time
t
2.2V < V < V
to V
= 10% of V
IN
20
2
ms
ms
INDBC
IN
OVLO
OVLO
OUT
2.2V < V < V
, R = 100Ω,
L
IN
Switch Turn-On Time
t
ON
V
= 10% to 80% of V , C = 1mF
OUT
IN L
V
> V
to V
= 80% of V
,
IN
OVLO
OUT
OVLO
Switch Turn-Off Time
t
1.5
3.5
µs
OFF
R = 10Ω
L
THERMAL PROTECTION
Thermal Shutdown
Low to high
150
20
°C
°C
Thermal ꢁysteresis
ESD PROTECTION
ꢁuman Body Model
15
15
8
D+ and D-
ꢀV
IEC 61000-4-2 Air Gap
IEC 61000-4-2 Contact
Note 2: Devices are production tested at T = +25°C. Specifications over temperature limits are guaranteed by design.
A
Note 3: Dropout voltage is defined as V
- V
when V
is at V
.
OUT
LOUT
LOUT
LOUT min)
(
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
INPUT SUPPLY CURRENT
vs. INPUT VOLTAGE
NORMALIZED OVLO THRESHOLD
NORMALIZED R vs. TEMPERATURE
vs. TEMPERATURE
ON
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
70
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
MAX14529E
V
= V = 3V
LEN
OEN
60
50
40
30
20
10
0
T
= +85°C
A
T
A
= +25°C
V
IN
= 3.6V
T
A
= -40°C
V
IN
= 5V
0.7
0.6
0.5
-40
-15
10
35
60
85
0
5
10
15
20
25
30
-40
-15
10
35
60
85
TEMPERATURE (°C)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
_______________________________________________________________________________________
3
Overvoltage Protection with USB Charger
Detection, LDO, and ESD Protection on D+/D-
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
NORMALIZED LDO OUTPUT VOLTAGE
LDO OUTPUT DROPOUT VOLTAGE
vs. LOAD CURRENT
vs. OUTPUT CURRENT
LDO OUTPUT VOLTAGE vs. INPUT VOLTAGE
1.010
1000
900
800
700
600
500
400
300
200
100
0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
MAX14529E
I
= 0
LOAD
1.005
1.000
0.995
0.990
0.985
0.980
T
= +85°C
A
T
A
= +25°C
T
A
= -40°C
0
10 20 30 40 50 60 70 80 90 100
OUTPUT CURRENT (mA)
0
10 20 30 40 50 60 70 80 90 100
LOAD CURRENT (mA)
0
1
2
3
4
5
6
7
8
INPUT VOLTAGE (V)
NORMALIZED DEBOUNCE TIME
vs. TEMPERATURE
POWER-UP RESPONSE
OVERVOLTAGE FAULT RESPONSE
MAX14529E/30E toc09
MAX14529E/30E toc08
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
0.90
29/MAX14530E
V
IN
V
IN
2V/div
5V/div
V
OUT
V
OUT
2V/div
5V/div
V
VOK
5V/div
V
VOK
V
OEN
5V/div
1V/div
-40
-15
10
35
60
85
5ms/div
1μs/div
TEMPERATURE (°C)
D+/D- INPUT LEAKAGE CURRENT
vs. TEMPERATURE
INPUT CAPACITANCE
vs. D+/D- INPUT VOLTAGE
CDET RESPONSE
MAX14529E/30E toc10
0.10
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
6
5
4
3
2
1
0
V
D+
2V/div
V
D-
2V/div
V
CDET
2V/div
-40
-15
10
35
60
85
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.5
D+/D- INPUT VOLTAGE (V)
100μs/div
TEMPERATURE (°C)
4
_______________________________________________________________________________________
Overvoltage Protection with USB Charger
Detection, LDO, and ESD Protection on D+/D-
29/MAX14530E
Pin Description
PIN
NAME
FUNCTION
Overvoltage-Protection Input. Bypass IN with a 1µF ceramic capacitor as close as possible to the device
to obtain 15ꢀV ꢁBM ESD protection. No capacitor required to obtain 2ꢀV ꢁBM ESD protection.
A1, A2
IN
Voltage Input Good Open-Drain Output. VOK is low impedance when OEN is driven low after the
A3
VOK
debounce time is expired (2.2V < V < V
IN
).
OVLO
A4
B1
B2
B3
B4
D-
USB Data Line with ESD Protection
OEN
LEN
Overvoltage Protection Active-Low Enable Input. Drive OEN high to disconnect OUT from IN.
Low-Dropout Active-Low Enable Input.
CDET
GND
Charger Detection Open-Drain Output. CDET is low if D+ and D- are shorted.
Ground
Overvoltage Switch Output. Bypass OUT with a 0.1µF ceramic capacitor as close as possible to the
device.
C1, C2
OUT
Low-Dropout Power Output. Bypass LOUT with a 1µF ceramic capacitor as close as possible to the
device.
C3
C4
LOUT
D+
USB Data Line with ESD Protection
OVLO
t
OFF
IN
80% V
OVLO
t
ON
80% V
IN
10% V
IN
OUT
t
t
INDBC
INDBC
Figure 1. MAX14529E/MAX14530E Timing Diagram
_______________________________________________________________________________________
5
Overvoltage Protection with USB Charger
Detection, LDO, and ESD Protection on D+/D-
the input voltage exceeds the overvoltage threshold,
Detailed Description
the internal FET switch is turned off to prevent damage
The MAX14529E/MAX14530E are overvoltage-protec-
to the protected components. The 20ms debounce
tion devices with USB charger detection, a low-dropout
time prevents false turn-on of the internal FET switch
(LDO) regulator, and ESD protection. These devices
during startup.
feature a low R
internal FET switch and protect low-
voltage systems against voltage faults up to 28V. When
ON
Functional Diagram
IN
OUT
CHARGE
PUMP
OEN
VOK
CONTROL
LOGIC
V
REF
29/MAX14530E
3.3V
LDO
LEN
D+
D-
LOUT
CDET
MAX14529E/
MAX14530E
6
_______________________________________________________________________________________
Overvoltage Protection with USB Charger
Detection, LDO, and ESD Protection on D+/D-
29/MAX14530E
inductance due to long lead length, taꢀe care to
prevent overshoots due to the LC tanꢀ circuit and pro-
vide protection.
Device Operation
The MAX14529E/MAX14530E have an internal oscillator
and charge pump that control the turn-on of the internal
FET switch. The internal oscillator controls the timers
that enable the turn-on of the charge pump and con-
ESD Test Conditions
ESD performance depends on a number of conditions.
The MAX14529E/MAX14530E are specified for
15ꢀV ꢁBM typical ESD protection on the D+, D-, and
IN pins when IN is bypassed to ground with a 1µF
ceramic capacitor.
trols the state of the open-drain VOK output. If V
>
IN
V
, the internal oscillator remains off, thus disabling
OVLO
the charge pump. If 2.2V < V < V
, the internal
OVLO
IN
charge pump is enabled. The charge-pump turns on
the internal FET switch and asserts VOK. At any time, if
V
IN
drops below 2.2V or rises above V
, VOK goes
OVLO
Human Body Model
Figure 2 shows the ꢁuman Body Model, and Figure 3
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of inter-
est that is then discharged into the device through a
1.5ꢀΩ resistor.
high and the charge pump is disabled, disconnecting
OUT from IN.
Overvoltage Lockout (OVLO)
The MAX14529E has a 5.75V (typ) overvoltage
threshold (OVLO), while the MAX14530E has a 6.8V
(typ) OVLO.
Low Dropout
The low-dropout regulator (LOUT) is powered from
input voltage and supplies 3.3V (typ) to the USB trans-
ceiver. If a lithium-ion (Li+) battery is used to power the
USB transceiver, a boost converter is needed. The LDO
features a minimum 100mA current capability and low
output noise. Drive LEN high to disable the LDO.
R
R
1MΩ
D
C
1500Ω
DISCHARGE
RESISTANCE
CHARGE-CURRENT-
LIMIT RESISTOR
HIGH-
VOLTAGE
DC
DEVICE
UNDER
TEST
C
STORAGE
CAPACITOR
s
100pF
Charger Detection
The charger detection detects if there is a short
between the USB D+ and D- data lines. If the data lines
are shorted together and a dedicated charger is
attached, the phone draws more than 500mA to charge
the battery; CDET asserts low. If the data lines are not
biased properly, then an unidentified device is present
and the phone draws no more than 500mA or does not
charge at all, depending on its USB compliance level.
SOURCE
Figure 2. ꢁuman Body ESD Test Model
Thermal-Shutdown Protection
The MAX14529E/MAX14530E feature thermal-
shutdown circuitry. The internal switch turns off when
the junction temperature exceeds +150°C (typ) and
immediately goes into a fault mode. The device exits
thermal shutdown after the junction temperature cools
by 20°C (typ).
I 100%
P
90%
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
I
R
AMPERES
36.8%
10%
0
Applications Information
TIME
0
IN Bypass Capacitor
Bypass IN to GND with a 1µF ceramic capacitor as
close as possible to the device for 15ꢀV ꢁBM ESD
protection on IN. No capacitor required to obtain 2ꢀV
ꢁBM protection. If the power source has significant
t
RL
t
DL
CURRENT WAVEFORM
Figure 3. ꢁuman Body Current Waveform
_______________________________________________________________________________________
7
Overvoltage Protection with USB Charger
Detection, LDO, and ESD Protection on D+/D-
lower in the IEC 61000-4-2 ESD test model (Figure 4),
the ESD-withstand voltage measured to this standard is
generally lower than that measured using the ꢁuman
Body Model. Figure 5 shows the current waveform for
the 8ꢀV IEC 61000-4-2 Level 4 ESD Contact
Discharge test. The Air-Gap Discharge test involves
approaching the device with a charged probe. The
Contact Discharge method connects the probe to the
device before the probe is energized.
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. It does not specifi-
cally refer to integrated circuits. The MAX14529E/
MAX14530E are specified for 15ꢀV Air-Gap Discharge
and 8ꢀV Contact Discharge IEC 61000-4-2 on the D+
and D- pins.
The main difference between tests done using the
ꢁuman Body Model and IEC 61000-4-2 is higher peaꢀ
current in IEC 61000-4-2. Because series resistance is
R
C
R
D
50MΩ to 100MΩ
330Ω
I
100%
90%
DISCHARGE
RESISTANCE
CHARGE-CURRENT-
LIMIT RESISTOR
HIGH-
VOLTAGE
DC
DEVICE
UNDER
TEST
C
s
150pF
STORAGE
CAPACITOR
SOURCE
10%
30ns
t
t = 0.7ns to 1ns
R
29/MAX14530E
60ns
Figure 4. IEC 61000-4-2 ESD Test Model
Figure 5. IEC 61000-4-2 ESD Generator Current Waveform
Chip Information
PROCESS: BiCMOS
8
_______________________________________________________________________________________
Overvoltage Protection with USB Charger
Detection, LDO, and ESD Protection on D+/D-
29/MAX14530E
Package Information
For the latest pacꢀage outline information and land patterns, go to www.maxim-ic.com/pacꢀages.
PACKAꢁE TYPE
PACKAꢁE CODE
DOCUMENT NO.
21-0009
12 WLP
W121B2+1
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9
© 2009 Maxim Integrated Products
Maxim is a registered trademarꢀ of Maxim Integrated Products, Inc.
相关型号：
MAX14529EEWC+T
Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/D-
MAXIM
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