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MAX14634EWC+T
Ultra-Low On-Resistance and Compact Bidirectional Battery Switches
MAX14634/MAX14680
Ultra-Low On-Resistance and Compact
Bidirectional Battery Switches
Typical Operating Circuit
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to www.maximintegrated.com/MAX14634.related.
EVALUATION KIT AVAILABLEGeneral Description
The MAX14634/MAX14680 bidirectional battery switches
feature reverse blocking capability to isolate the battery
from the system. These internal switches feature ultra-
low 7mI (typ) on-resistance and operate from a +2.3V to
+5.5V input voltage range, making these devices ideal
battery-disconnect switches for high-capacity battery
applications. The slew-rate controlled switches are also
ideal for a large load capacitor as well as high-current
load switching applications.
The devices are available in an ultra-small 12-bump
(1.3mm x 1.7mm, 0.4mm pitch) WLP package. The tiny,
low-profile package is suitable for space-limited portable
device applications. The devices operate over the -40NC
to +85NC extended temperature range.
Applications
Tablet PC Battery Switches
Smartphone Battery Switches
Battery Isolators
Benefits and Features
S Provide Efficient System Battery Switch Integrated FET for Bidirectional Blocking Ultra-Low 7mI (typ) RON Wide +2.3V to +5.5V Input Voltage Range Low Quiescent Current
S Save Space Integrated Pulldown and Logic Buffer Circuits 12-Bump, 1.3mm x 1.7mm, 0.4mm Pitch WLP
Package
MAX14634
MAX14680
CONTROL
LOGIC
SWITCHING
REGULATOR
AND
CONTROL
SYSTEM
CONNECTOR
POWER PATCH
CHARGER
PWRB
CHARGER
OUTPUT
BATTERY
PACK
PWRA
GNDEN
(EN)
( ) MAX14680 ONLY
SYSTEM INPUT
RPD
MAX14634/MAX14680
Ultra-Low On-Resistance and Compact
Bidirectional Battery Switches
(All voltages referenced to GND.)
PWRA, PWRB, EN, EN ............................................-0.3V to +6V
Current into PWRA, PWRB ...................................................Q7A
Continuous Power Dissipation (TA = +70NC)WLP (derate 13.7mW/NC above +70NC)....................1096mW
Operating Temperature Range ..........................-40NC to +85NC
Maximum Junction Temperature .....................................+150NC
Storage Temperature Range ............................-65NC to +150NC
Soldering Temperature (reflow) ......................................+260NC
WLP
Junction-to-Ambient Thermal Resistance (qJA) ..........73°C/W
ABSOLUTE MAXIMUM RATINGS
Note 2: All devices are 100% production tested at TA = + 25NC. Specifications over the operating temperature range are
guaranteed by design.
Note 1: 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.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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 1)
ELECTRICAL CHARACTERISTICS
(VPWRA, VPWRB = 2.3V to 5.5V; TA = -40NC to +85NC, unless otherwise noted. Typical values are at VPWRA, VPWRB = 4.2V; CPWRA,
CPWRB = 0.1µF; TA = +25NC.) (Note 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
SUPPLY OPERATION
Operating Voltage VPWRA
VPWRB2.35.5V
Quiescent CurrentIPWRA
IPWRBVEN = 0.4V (VEN = 1.6V), no load1FA
Transient Supply CurrentEN (EN) from high to low or low to high30FA
Shutdown CurrentISHDN
VEN = 5.5V (VEN = 0V) , (VPWRA = 5.5V,
VPWRB = open) or (VPWRB = 5.5V, VPWRA
= open)FA
INTERNAL FET
On-Resistance Between PWRA
and PWRBRONTA = +25NC,
ILOAD = 100mA
VPWRA, VPWRB = 2.3V813mIVPWRA, VPWRB = 3.3V710
ENABLE INPUT (Note 3)
Enable Input Logic-High VoltageVIH1.6V
Enable Input Logic-Low VoltageVIL0.4V
Enable Internal Pulldown
ResistorRPD500700kI
DYNAMIC
Turn-On TimetONTime from EN high-to-low (EN low-to-high)
signal to VPWRB/A = 90% of VPWRA/B 3ms
Turn-Off TimetOFF
Time from EN low-to-high (EN high-to-low)
signal to VPWRB/A = 10% of VPWRA/B,
RLOAD = 100I ms
MAX14634/MAX14680
Ultra-Low On-Resistance and Compact
Bidirectional Battery Switches
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
PWRA QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX14634 toc01
PWRA VOLTAGE (V)
PWRA QUIESCENT CURRENT (nA)4321
VEN = 0V, VEN = 5V
CPWRA = 1µF
CPWRB = 1µF
PWRB QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX14634 toc02
PWRB VOLTAGE (V)
PWRB QUIESCENT CURRENT (nA)4321
VEN = 0V, VEN = 5V
CPWRA = 1µF
CPWRB = 1µF
PWRA QUIESCENT SUPPLY CURRENT
vs. TEMPERATURE
MAX14634 toc03
TEMPERATURE (°C)
PWRA QUIESCENT CURRENT (nA)3510-15
VEN = 0V, VEN = 5V
VPWRA = 5V
VPWRA = 4.2V
VPWRA = 2.7V
PWRB QUIESCENT SUPPLY CURRENT
vs. TEMPERATURE
MAX14634 toc04
TEMPERATURE (°C)
PWRB QUIESCENT CURRENT (nA)3510-15
VEN = 0V, VEN = 5V
VPWRB = 5V
VPWRB = 4.2V
VPWRB = 2.7V
PWRA SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX14634 toc05
TEMPERATURE (ºC)
PWRA SHUTDOWN CURRENT (µA)3510-15
VEN = 1.8V, VEN = 0V
VPWRA = 5V, VPWRB = OPEN
VPWRA = 4.2V, VPWRB = OPEN
VPWRA = 2.7V, VPWRB = OPEN
VPWRA = 5V, VPWRB = 5V
VPWRA = 4.2V, VPWRB = 5V
VPWRA = 2.7V, VPWRB = 5V
PWRB SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX14634 toc06
TEMPERATURE (ºC)
PWRB SHUTDOWN CURRENT (µA)3510-15
VPWRB = 5V, VPWRA = OPEN
VPWRB = 4.2V, VPWRA = OPEN
VPWRB = 2.7V, VPWRA = OPEN
VPWRB = 5V, VPWRA = 5V
VPWRB = 4.2V, VPWRA = 5V
VPWRB = 2.7V, VPWRA = 5V
VEN = 1.8V, VEN = 0V
PWRA SHUTDOWN CURRENT
vs. EN VOLTAGE
MAX14634 toc07
PWRA SHUTDOWN CURRENT (µA)4321
VPWRB = OPEN
VPWRA = 5.5V
VPWRA = 4.2VVPWRA = 3.3V
NORMALIZED ON-RESISTANCE
vs. LOAD CURRENT
MAX14634 toc08
NORMALIZED R4321
VPWRA = 5V
VPWRA = 4.2V
VPWRA = 2.7V
MAX14634/MAX14680
Ultra-Low On-Resistance and Compact
Bidirectional Battery Switches
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
NORMALIZED ON-RESISTANCE
vs. PWRA VOLTAGE
MAX14634 toc09
VPWRA (V)
NORMALIZED R43
ILOAD = 100mA
NORMALIZED ON-RESISTANCE
vs. PWRB VOLTAGE
MAX14634 toc10
VPWRB (V)
NORMALIZED R43
ILOAD = 100mA
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
MAX14634 toc11
TEMPERATURE (°C)
NORMALIZED R3510-15-4085
VPWRA = 4.2V
ILOAD = 100mA
SWITCH TURN ON-TIME
vs. TEMPERATURE
MAX14634 toc12
TEMPERATURE (°C)
TURN-ON TIME (ms)3510-15-4085
RLOAD = 10I
VPWRA = 2.7V
VPWRA = 4.2V
SWITCH-ON WAVEFORM
MAX14634 toc14
VEN
5V/div
VPWRA
5V/div
VPWRB
5V/div
IPWRA
0.5A/div
2ms/div
RLOAD = 10I
SWITCH TURN OFF-TIME
vs. TEMPERATURE
MAX14634 toc13
TEMPERATURE (°C)
TURN-OFF TIME (ms)3510-15-4085
RLOAD = 10IVPWRA = 4.2V
VPWRA = 2.7V
SWITCH-OFF WAVEFORM
MAX14634 toc15
VEN
5V/div
VPWRA
5V/div
VPWRB
5V/div
IPWRA
0.5A/div
2ms/div
RLOAD = 10I
MAX14634/MAX14680
Ultra-Low On-Resistance and Compact
Bidirectional Battery Switches
Bump Description
Bump Configuration
MAX14634MAX14680NAMEFUNCTION
A1, A3, B1,
B3, C3
A1, A3, B1,
B3, C3PWRBPower I/O
A2, B2, B4,
C2, C4
A2, B2, B4,
C2, C4PWRAPower I/O—ENActive-Low Enable Input. Drive EN low to turn on the switch.A4ENActive-High Enable Input. Drive EN high to turn on the switch.C1GNDGround
12 WLPTOP VIEW(BUMPS ON BOTTOM)
PWRAGND
PWRAPWRB
EN/(EN)PWRB
MAX14634
MAX14680
( ) MAX14680 ONLY34
PWRAPWRB
PWRAPWRB
PWRAPWRB
MAX14634/MAX14680
Ultra-Low On-Resistance and Compact
Bidirectional Battery Switches
Functional Diagram
Detailed Description
The MAX14634/MAX14680 bidirectional battery switches
feature reverse blocking capability to isolate the battery
from the system. These internal switches feature ultra-
low 7mI (typ) on-resistance and operate from a +2.3V to
+5.5V input voltage range, making these devices ideal
as battery-disconnect switches for high-capacity battery
applications. The slew-rate controlled switches are also
ideal for a large load capacitor as well as high-current
load switching applications.
The devices are available in an ultra-small 12-bump
(1.3mm x 1.7mm, 0.4mm pitch) WLP package. The tiny,
low-profile package is suitable for space-limited portable
device applications. The devices operate over the -40NC
to +85NC extended temperature range.
Reverse-Current Blocking
The bidirectional FET switch prevents current flowing from
either power input to the other when the switch is disabled.
EN/EN Input
The MAX14634’s switch position is controlled by an EN
active-low logic input. The switch is on when EN is logic-
low and off when EN is logic-high. EN is internally pulled
down to ground by RPD.
The MAX14680’s switch position is controlled by an EN
active-high logic input. The switch is on when EN is logic-
high and off when EN is logic-low. EN is internally pulled
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel
Package Information
For the latest package outline information and land patterns (foot-
prints), 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.
Chip Information
PROCESS: BiCMOS
PARTTEMP
RANGE
TOP
MARK
PIN-
PACKAGE
MAX14634EWC+T-40NC to +85NCACO12 WLP
MAX14680EWC+T-40NC to +85NCACV12 WLP
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
12 WLPW121F1+121-0542Refer to Application
Note 1891
MAX14634
MAX14680
PWRBPWRA
( ) MAX14680 ONLY
GNDEN/(EN)
RPD
INTERNAL BIAS
CIRCUIT
