EVALUATION KIT AVAILABLE
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
General Description
The MAX14653/MAX14654/MAX14655/MAX14717 overvoltage protection devices feature a low 38mΩ (typ) RON
internal FET and protect low-voltage systems against
voltage faults up to +28VDC. An internal clamp also protects the devices from surges up to +80V. When the input
voltage exceeds the overvoltage threshold, the internal
FET is turned off to prevent damage to the protected
downstream components.
The overvoltage protection threshold can be adjusted with
optional external resistors to any voltage between 4V and
20V. With the OVLO input set below the external OVLO
select voltage, the MAX14653/MAX14654/MAX14655/
MAX14717 automatically choose the accurate internal trip
thresholds. The internal overvoltage thresholds (OVLO)
are preset to 15.5V typical (MAX14653), 6.8V typical
(MAX14654/MAX14717), or 5.825V typical (MAX14655).
The devices feature an open-drain ACOK output indicating a stable supply between minimum supply voltage and VOVLO. The MAX14653/MAX14654/MAX14655/
MAX14717 are also protected against overcurrent events
by an internal thermal shutdown.
The MAX14653/MAX14654/MAX14655/MAX14717 are
offered in a small 12-bump WLP package and operate
over the -40ºC to +85ºC extended temperature range.
Benefits and Features
● Protect High-Power Portable Devices
• Wide Operating Input Voltage Protection from
+2.5V to +28V
• Integrated 38mΩ (typ) n-Channel MOSFET Switch
● Flexible Overvoltage Protection Design
• Adjustable Overvoltage Protection Trip Level
• Wide Adjustable OVLO Threshold Range from
+4V to +20V
• Preset Internal Accurate OVLO Thresholds:
15.5V ±3.3% (MAX14653)
6.8V ±2.9% (MAX14654/MAX14717)
5.825V ±3% (MAX14655)
● Additional Protection Features Increase System
Reliability
• Surge Immunity to +80V
• Soft-Start to Minimize In-Rush Current
• Internal 15ms Startup Debounce
• Thermal-Shutdown Protection
● Minimize PCB Area
• 12-Bump WLP (1.29mm x 1.83mm) Package
● -40ºC to +85ºC Operating Temperature Range
Ordering Information appears at end of data sheet.
Applications
● Smartphones
● Tablet PCs
● Mobile Internet Devices
Typical Application Circuit
POWER
ADAPTER
0.1µF
R1*
IN
OUT
IN
OUT
IN
OUT
MAX14653
MAX14654
OVLO MAX14655
MAX14717
R2*
GND
ACOK
*R1 AND R2 ARE ONLY REQUIRED FOR ADJUSTABLE OVLO; OTHERWISE, CONNECT OVLO TO GND.
19-6550; Rev 2; 5/14
CHARGER
1µF
VI/O
PMIC
APPS PROCESSOR
Li-ION
BATTERY
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
Absolute Maximum Ratings
(All voltages referenced to GND.)
IN (Note 1)..............................................................-0.3V to +29V
OUT............................................................... -0.3V to VIN + 0.3V
OVLO.....................................................................-0.3V to +24V
ACOK.......................................................................-0.3V to +6V
Continuous IN, OUT Current.................................................4.5A
(Note: Continuous current limited by thermal design.)
Peak IN, OUT Current (10ms)..................................................8A
Continuous Power Dissipation (TA = +70ºC)
WLP (derate 13.7mW/ºC above +70ºC).....................1096mW
Operating Temperature Range.............................-40ºC to +85ºC
Junction Temperature....................................................... +150ºC
Storage Temperature Range..............................-65ºC to +150ºC
Soldering Temperature (reflow)........................................ +260ºC
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.
Package Thermal Characteristics (Note 2)
WLP
Junction-to-Ambient Thermal Resistance (θJA)...........73°C/W
Note 1: Survives burst pulse up to 80V with 2Ω series resistance.
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(VIN = +2.5V to +28V, CIN = 0.1μF, TA = -40ºC to +85ºC, unless otherwise noted. Typical values are at VIN = +5.0V, IIN ≤ 3A, and
TA = +25ºC.) (Note 3)
PARAMETER
SYMBOL
Input Voltage Range
VIN
Input Clamp Voltage
VIN_CLAMP
Input Supply Current
IIN
OVLO Supply Current
IIN_Q
CONDITIONS
28
V
VIN = 5V
70
120
µA
VOVLO = 3V, VIN = 5V,
VOUT = 0V
63
120
µA
15
15.5
16
6.6
6.8
7.0
5.65
5.825
6.00
MAX14653
MAX14654/
MAX14717
MAX14655
MAX14653
MAX14654/
MAX14717
MAX14655
V
14.5
5.55
1.22
1.26
1.30
MAX14654, MAX14655, MAX14717
1.18
1.22
1.26
External OVLO Select
Threshold
VOVLO_SELECT
Switch On-Resistance
RON
VIN = 5V, IOUT = 1A, TA = +25ºC
OUT Load Capacitance
COUT
VIN = 5V
OVLO Input Leakage Current
IOVLO
VOVLO = VOVLO_TH
V
6.5
MAX14653
Adjustable OVLO Threshold
Range
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UNITS
33
VIN_OVLO
VOVLO_TH
MAX
IIN = 10mA, TA = +25ºC
VIN falling
OVLO Set Threshold
TYP
2.5
VIN rising
Internal Overvoltage Trip
Level
MIN
V
4
20
V
0.2
0.3
V
53
mΩ
1000
µF
100
nA
38
-100
Maxim Integrated │ 2
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
Electrical Characteristics (continued)
(VIN = +2.5V to +28V, CIN = 0.1μF, TA = -40ºC to +85ºC, unless otherwise noted. Typical values are at VIN = +5.0V, IIN ≤ 3A, and
TA = +25ºC.) (Note 3)
PARAMETER
SYMBOL
IN Leakage Voltage by OVLO
VIN_LEAK
CONDITIONS
MIN
TYP
VOVLO = 20V, VIN = unconnected,
ROVLO = 1MΩ
MAX
UNITS
0.5
V
Thermal Shutdown
130
ºC
Thermal-Shutdown Hysteresis
20
ºC
DIGITAL SIGNALS (ACOK)
ACOK Output Low Voltage
ACOK Leakage Current
VOL
VACOK_LEAK
VI/O = 3.3V, ISINK = 1mA, see the
Typical Application Circuit
VI/O = 3.3V, ACOK deasserted, see
the Typical Application Circuit
-1
0.4
V
+1
µA
TIMING CHARACTERISTICS (Figure 1)
Debounce Time MAX14653/
MAX14654/MAX14655
tDEB
Time from 2.5V < VIN < VIN_OVLO to
VOUT = 10% of VIN
15
ms
Debounce Time MAX14717
tDEB
Time from 2.5V < VIN < VIN_OVLO to
VOUT = 10% of VIN
150
ms
Soft-Start Time MAX14653/
MAX14654/MAX14655
tSS
VOUT = 10% of VIN to soft-start off
30
ms
Soft-Start Time MAX14717
tSS
VOUT = 10% of VIN to soft-start off
165
ms
Switch Turn-On Time
tON
VIN = 5V, RL = 100Ω,
CLOAD = 100µF, VOUT from 10%,
VIN to 90% VIN
2
ms
Switch Turn-Off Time
tOFF
VIN > VOVLO to VOUT = 80% of VIN,
RL = 100Ω, VIN rising at 2V/µs
2
µs
Human Body Model
All pins
±2
kV
IEC 61000-4-2 Contact
Discharge
IN pin
±8
kV
IEC 61000-4-2 Air Gap
Discharge
IN pin
±15
kV
ESD PROTECTION
Note 3: All specifications are 100% production tested at TA = +25ºC, unless otherwise noted. Specifications are over -40ºC to
+85ºC and are guaranteed by design.
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Maxim Integrated │ 3
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
OVLO
2.5V
IN
90%
OUT
THERMAL SHUTDOWN
tON
tON
90%
10%
tDEB
10%
tDEB
tSS
tOFF
tDEB
tOFF
tDEB
VOVLO_TH
OVLO
ACOK
NOTE: WAVEFORMS ARE NOT TO SCALE
Figure 1. Timing Diagram
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Maxim Integrated │ 4
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
Typical Operating Characteristics
(VIN = +5.0V, CIN = 0.1µF, COUT = 1µF, TA = +25ºC, unless otherwise noted.)
TA = +25°C
TA = -40°C
100
50
4
8
12
16
20
24
0.02
0
28
0
MAX14653 toc04
NORMALIZED TO 0.1A
2.0
1.5
1.0
4
5
6
1.10
1.2
0.1
2.3
3.4
0
7
-40
-15
10
35
60
1.10
NORMALIZED TO TA = +25°C
1.06
1.02
0.98
0.94
0.90
4.5
-40
-15
10
35
60
85
NORMALIZED EXTERNAL OVLO SET
THRESHOLD vs. TEMPERATURE
NORMALIZED EXTERNAL OVLO SELECT
THRESHOLD vs. TEMPERATURE
1.02
0.98
0.94
-40
-15
10
35
TEMPERATURE (°C)
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60
85
85
NORMALIZED OVLO THRESHOLD
vs. TEMPERATURE
TEMPERATURE (°C)
NORMALIZED TO TA = +25°C
MAX14653 toc03
0.5
OUTPUT CURRENT (A)
1.06
0.90
1.0
TEMPERATURE (°C)
0.5
MAX14653 toc06
NORMALIZED ON-RESISTANCE
3
NORMALIZED RON
vs. OUTPUT CURRENT
2.5
0
NORMALIZED THRESHOLD
2
1.5
VOVLO (V)
IN VOLTAGE (V)
3.0
1
IOUT = 1A
NORMALIZED TO TA = +25°C
1.10
1.06
MAX14653 toc07
0
0.04
NORMALIZED THRESHOLD
0
0.06
NORMALIZED THRESHOLD
150
0.08
2.0
NORMALIZED RON
vs. TEMPERATURE
MAX14653 toc05
200
MAX14653 toc02
TA = +85°C
OVLO LEAKAGE CURRENT (µA)
MAX14653
250
0.10
MAX14653 toc01
IN SUPPLY CURRENT (µA)
300
OVLO LEAKAGE CURRENT vs. VOVLO
NORMALIZED ON-RESISTANCE
IN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
NORMALIZED TO TA = +25°C
VIN = +16V, MAX14653
1.02
0.98
0.94
0.90
-40
-15
10
35
60
85
TEMPERATURE (°C)
Maxim Integrated │ 5
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
Typical Operating Characteristics (continued)
(VIN = +5.0V, CIN = 0.1µF, COUT = 1µF, TA = +25ºC, unless otherwise noted.)
NORMALIZED DEBOUNCE TIME
1.8
POWER-UP RESPONSE (CL = 100µF)
MAX14653 toc09
MAX14653 toc08
2.0
NORMALIZED DEBOUNCE TIME
vs. TEMPERATURE
NORMALIZED TO TA = +25°C
1.6
VIN
5V/div
1.4
1.2
VOUT
5V/div
1.0
0.8
0.6
IOUT
100mA/div
0.4
0.2
0
-40
-15
10
35
60
85
4ms/div
TEMPERATURE (°C)
OVERVOLTAGE FAULT RESPONSE
POWER-UP RESPONSE (CL = 1000µF)
MAX14653 toc11
MAX14653 toc10
VIN
5V/div
VIN
10V/div
VOUT
5V/div
VOUT
10V/div
IOUT
100mA/div
4ms/div
IOUT
500mA/div
40ms/div
80V SURGE TEST WAVEFORM
(WITHOUT MAX14653)
80V SURGE TEST WAVEFORM
(WITH MAX14653)
MAX14653 toc12
MAX14653 toc13
VIN
20V/div
20V/div
10µs/div
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10µs/div
Maxim Integrated │ 6
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
Pin Configuration
MAX14653
MAX14654
MAX14655
MAX14717
TOP VIEW
(BUMPS ON BOTTOM)
+ GND
1
2
3
4
OUT
OUT
GND
ACOK
OUT
IN
GND
OVLO
IN
IN
GND
A
B
C
WLP
(1.3mm x 1.86mm)
Pin Description
PIN
NAME
A1, A4, B4, C4
GND
Ground. Connect GND pins together for proper operation.
A2, A3, B2,
OUT
Output Voltage. Output of internal switch. Connect OUT pins together for proper operation.
B1
ACOK
B3, C2, C3
IN
C1
OVLO
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FUNCTION
Open-Drain Flag Output. ACOK is driven low after input voltage is stable between minimum VIN
and VOVLO after debounce. Connect a pullup resistor from ACOK to the logic I/O voltage of the
host system. ACOK is high impedance after thermal shutdown.
Voltage Input. Bypass IN with a 0.1µF ceramic capacitor as close as possible to the device.
Connect IN pins together for proper operation.
External OVLO Adjustment. Connect OVLO to GND when using the internal threshold. Connect
a resistor-divider to OVLO to set a different OVLO threshold; this external resistor-divider is
completely independent of the internal threshold.
Maxim Integrated │ 7
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
Functional Diagram
IN
IN
OUT
OUT
MAX14653
MAX14654
MAX14655
MAX14717
IN
OUT
CHARGE
PUMP
TEMPERATURE
FAULTS
VBG
REFERENCE
OVLO
LOGIC
CONTROL
ACOK
SEL
GND
Detailed Description
The MAX14653/MAX14654/MAX14655/MAX14717 overvoltage protection devices feature a low on-resistance
(RON) internal FET and protect low-voltage systems
against voltage faults up to +28VDC. An internal clamp
also protects the devices from surges up to +80V. If
the input voltage exceeds the overvoltage threshold,
the internal FET is turned off to prevent damage to the
protected components. The 15ms debounce time built
into the device prevents false turn-on of the internal FET
during startup.
Device Operation
The devices contain timing logic that controls the turn-on
of the internal FET. The internal charge pump is enabled
when VIN < VIN_OVLO if internal trip thresholds are used
or when VIN < VOVLO_TH if external trip thresholds are
used. The charge-pump startup, which occurs after a
15ms debounce delay, turns the internal FET on (see the
Functional Diagram). After the debounce time, soft-start
limits the FET inrush current for 30ms (typ). At any time,
if VIN rises above VOVLO_THRESH, OUT is disconnected
from IN.
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Internal Switch
The
MAX14653/MAX14654/MAX14655/MAX14717
incorporate an internal FET with a 38mΩ (typ) RON. The
FET is internally driven by a charge pump that generates
a necessary gate voltage above IN.
Overvoltage Lockout (OVLO)
The MAX14653 has a 15.5V (typ) overvoltage threshold
(OVLO). The MAX14654/MAX14717 and MAX14655
have 6.8V and 5.825V (typ) OVLO thresholds, respectively.
Thermal Shutdown Protection
The MAX14653/MAX14654/MAX14655/MAX14717 feature thermal shutdown circuitry. The internal FET turns off
when the junction temperature exceeds +130ºC (typ). The
device exits thermal shutdown once the junction temperature cools by 20ºC (typ).
ACOK Output
An open-drain ACOK output gives the MAX14653/
MAX14654 /MAX14655/MAX14717 the ability to communicate a stable power source to the host system. ACOK is
driven low after input voltage is stable between minimum
VIN and VOVLO after debounce. Connect a pullup resistor from ACOK to the logic I/O voltage of the host system.
ACOK is high impedance after thermal shutdown.
Maxim Integrated │ 8
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
Applications Information
OUT Output Capacitor
IN Bypass Capacitor
For most applications, bypass IN to GND with a 0.1µF
ceramic capacitor as close as possible to the device. If
the power source has significant inductance due to long
lead length, the device clamps the overshoot due to LC
tank circuit.
RC
1MΩ
CHARGE-CURRENTLIMIT RESISTOR
HIGHVOLTAGE
DC
SOURCE
Cs
100pF
RD
1.5kΩ
DISCHARGE
RESISTANCE
DEVICE
UNDER
TEST
STORAGE
CAPACITOR
The slow turn-on time provides a soft-start function that
allows the MAX14653/MAX14654/MAX14655/MAX14717
to charge an output capacitor up to 1000µF without turning off due to an overcurrent condition.
External OVLO Adjustment Functionality
If OVLO is connected to ground, the internal OVLO comparator uses the internally set OVLO value.
If an external resistor-divider is connected to OVLO
and VOVLO exceeds the OVLO select voltage, VOVLO_
SELECT, the internal OVLO comparator reads the IN
fraction fixed by the external resistor divider. R1 = 1MΩ is
a good starting value for minimum current consumption.
Since VIN_OVLO, VOVLO_THRESH, and R1 are known,
R2 can be calculated from the following formula:
R
VIN_OVLO
= VOVLO_TH × 1 + 1
R2
This external resistor-divider is completely independent
from the internal resistor-divider.
ESD Test Conditions
Figure 2a. Human Body ESD Test Model
IP 100%
90%
IR
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
ESD performance depends on a number of conditions.
The MAX14653/MAX14654/MAX14655/MAX14717 are
specified for ±2kV HBM typical ESD on all pins, Contact
and Air-Gap Discharge on pin IN. Contact Maxim for a
reliability report that documents test setup, test methodology, and test results.
HBM ESD Protection
AMPERES
36.8%
10%
0
0
tRL
TIME
tDL
Figure 2a shows the Human Body Model, while Figure 2b
shows the current waveform it generates when discharged
into low impedance. This model consists of a 100pF
capacitor charged to the ESD voltage of interest, which is
then discharged into the device through a 1.5kΩ resistor.
CURRENT WAVEFORM
Figure 2b. Human Body Current Waveform
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Maxim Integrated │ 9
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
Ordering Information
Package Information
PINPACKAGE
TOP
MARK
OVLO
(V)
MAX14653EWC+T
12 WLP
ACS
15.5
MAX14654EWC+T
12 WLP
ACT
6.8
MAX14655EWC+T
12 WLP
ACU
5.825
MAX14717EWC+T
12 WLP
ADJ
6.8
PART
Note: All devices are specified over the -40ºC to +85ºC
temperature range.
+Denotes lead(Pb)-free/RoHS-compliant package.
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
12 WLP
W121G1+1
21-0542
Refer to
Application
Note 1891
T = Tape and reel.
Chip Information
PROCESS: BiCMOS
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Maxim Integrated │ 10
MAX14653/MAX14654/
MAX14655/MAX14717
High-Current Overvoltage Protectors
with Adjustable OVLO
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
0
1/13
Initial release
—
1
3/13
Removed future product asterisks for the MAX14653 and MAX14655
10
2
5/14
Added MAX14717
7
DESCRIPTION
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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