typical operating circuit 19-6370; rev 1; 1/13 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 . general description the max14634 bidirectional battery switch features reverse blocking capability to isolate the battery from the system. the internal switch features ultra-low 7m i (typ) on-resistance and operates from a +2.3v to +5.5v input voltage range, making this device ideal as a battery- disconnect switch for high-capacity battery applications. the slew-rate controlled switch is also ideal for a large load capacitor as well as high-current load switching applications. the device is 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 device operates over the -40 n c to +85 n c extended temperature range. applications tablet pc battery switches smartphone battery switches battery isolators benefits and features s provides efficient system battery switch ? integrated fet for bidirectional blocking ? ultra-low 7m i (typ) r on ? wide input voltage range: +2.3v to +5.5v ? low quiescent current s saves space ? integrated pulldown and logic buffer circuits ? 12-bump, 1.3mm x 1.7mm, 0.4mm pitch wlp package max14634 control logic switching regulato r an d contro l system connector power patch charger pwrb charger output battery pack pwra gnd en system input r pd max14634 ultra-low on-resistance and compact bidirectional battery switch evaluation kit available for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim integrateds website at www.maximintegrated.com.
2 (all voltages referenced to gnd.) pwra, pwrb, en ................................................... -0.3v to +6v current into pwra, pwrb ................................................... q 7a continuous power dissipation (t a = +70 n c) wlp (derate 13.7mw/ n c above +70 n c) .................... 1096mw operating temperature range .......................... -40 n c to +85 n c maximum junction temperature ..................................... +150 n c storage temperature range ............................ -65 n c to +150 n c soldering temperature (reflow) ...................................... +260 n c wlp junction-to-ambient thermal resistance ( q ja ) .......... 73c/w absolute maximum ratings note 2: all devices are 100% production tested at t a = + 25 n c. 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 (v pwra , v pwrb = 2.3v to 5.5v; t a = -40 n c to +85 n c, unless otherwise noted. typical values are at v pwra , v pwrb = 4.2v; c pwra, c pwrb = 0.1f; t a = +25 n c.) (note 2) parameter symbol conditions min typ max units supply operation operating voltage v pwra v pwrb 2.3 5.5 v quiescent current i pwra i pwrb v en = 0.4v, no load 1 f a transient supply current en from high to low or low to high 30 f a shutdown current i shdn v en = 5.5v, (v pwra = 5.5v, v pwrb = open) or (v pwrb = 5.5v, v pwra = open) 1 f a internal fet on-resistance between pwra and pwrb r on t a = +25 n c, i load = 100ma v pwra , v pwrb = 2.3v 8 13 m i v pwra , v pwrb = 3.3v 7 10 en input en input logic-high voltage v ih 1.6 v en input logic-low voltage v il 0.4 v en internal pulldown resistor r pd 500 700 k i dynamic turn-on time t on time from en high-to-low signal to v pwrb/a = 90% of v pwra/b 3 ms turn-off time t off time from en low-to-high signal to v pwrb/a = 10% of v pwra/b , r load = 100 i 3 ms max14634 ultra-low on-resistance and compact bidirectional battery switch maxim integrated
3 typical operating characteristics (t a = +25c, unless otherwise noted.) pwra quiescent supply current vs. supply voltage max14634 toc01 pwra voltage (v) pwra quiescent current (na) 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 0 06 v en = 0v c pwra = 1f c pwrb = 1f pwrb quiescent supply current vs. supply voltage max14634 toc02 pwrb voltage (v) pwrb quiescent current (na) 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 0 06 v en = 0v c pwra = 1f c pwrb = 1f pwra quiescent supply current vs. temperature max14634 toc03 temperature (c) pwra quiescent current (na) 60 35 10 -15 5 10 15 20 25 30 35 40 45 50 0 -40 85 v en = 0v v pwra = 5v v pwra = 4.2v v pwra = 2.7v pwrb quiescent supply current vs. temperature max14634 toc04 temperature (c) pwrb quiescent current (na) 60 35 10 -15 5 10 15 20 25 30 35 40 45 50 0 -40 85 v en = 0v v pwrb = 5v v pwrb = 4.2v v pwrb = 2.7v pwra shutdown supply current vs. temperature max14634 toc05 temperature (oc) pwra shutdown current (a) 60 35 10 -15 -1 0 1 2 3 4 5 -2 -40 85 v en = 1.8v v pwra = 5v, v pwrb = open v pwra = 4.2v, v pwrb = open v pwra = 2.7v, v pwrb = open v pwra = 5v, v pwrb = 5v v pwra = 4.2v, v pwrb = 5v v pwra = 2.7v, v pwrb = 5v pwrb shutdown supply current vs. temperature max14634 toc06 temperature (oc) pwrb shutdown current (a) 60 35 10 -15 -1 0 1 2 3 4 5 -2 -40 85 v en = 1.8v v pwrb = 5v, v pwra = open v pwrb = 4.2v, v pwra = open v pwrb = 2.7v, v pwra = open v pwrb = 5v, v pwra = 5v v pwrb = 4.2v, v pwra = 5v v pwrb = 2.7v, v pwra = 5v pwra shutdown current vs. en voltage max14634 toc07 en voltage (v) pwra shutdown current (a) 5 4 3 2 1 0.5 1.0 1.5 2.0 2.5 3.0 0 06 v pwrb = open v pwra = 5.5v v pwra = 4.2v v pwra = 3.3v normalized on-resistance vs. load current max14634 toc08 load current (a) normalized r on 5 4 3 2 1 0.95 1.00 1.05 1.10 1.15 1.20 0.90 06 v pwra = 5v v pwra = 4.2v v pwra = 2.7v max14634 ultra-low on-resistance and compact bidirectional battery switch maxim integrated
4 typical operating characteristics (continued) (t a = +25c, unless otherwise noted.) normalized on-resistance vs. pwra voltage max14634 toc09 v pwra (v) normalized r on 5 4 3 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 0.5 26 i load = 100ma normalized on-resistance vs. pwrb voltage max14634 toc10 v pwrb (v) normalized r on 5 4 3 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 0.5 26 i load = 100ma normalized on-resistance vs. temperature max14634 toc11 temperature (c) normalized r on 60 35 10 -15 -40 85 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 0.5 v pwra = 4.2v i load = 100ma switch turn on-time vs. temperature max14634 toc12 temperature (c) turn-on time (ms) 60 35 10 -15 -40 85 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 r load = 10i v pwra = 2.7v v pwra = 4.2v switch-on waveform max14634 toc14 v en 5v/div v pwra 5v/div v pwrb 5v/div i pwra 0.5a /div 2ms / div r load = 10 i switch turn off-time vs. temperature max14634 toc13 temperature (c) turn-off time (ms) 60 35 10 -15 -40 85 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 r load = 10i v pwra = 4.2v v pwra = 2.7v switch-off waveform max14634 toc15 v en 5v/div v pwra 5v/div v pwrb 5v/div i pwra 0.5a /div 2ms / div r load = 10 i max14634 ultra-low on-resistance and compact bidirectional battery switch maxim integrated
5 bump description bump configuration bump name function a1, a3, b1, b3, c3 pwrb power i/o a2, b2, b4, c2, c4 pwra power i/o a4 en active-low enable input. drive en low to turn on the switch. c1 gnd ground 12-wlp top view (bumps on bottom) pwra gnd pwra pwrb en pwrb max14634 + 1 2 34 a pwra pwrb pwra pwrb pwra pwrb b c max14634 ultra-low on-resistance and compact bidirectional battery switch maxim integrated
6 functional diagram detailed description the max14634 is a bidirectional switch with ultra-low 7m i (typ) on-resistance and reverse-current blocking capabil - ity. the device has low quiescent current and operates from a +2.3v to +5.5v input voltage range, making this device ideal as a battery-disconnect switch for high- capacity battery applications. the slew-rate controlled switch is also ideal for a large load capacitor as well as high-current load switching applications. reverse-current blocking the bidirectional fet switch prevents current flowing from either power input to the other when the switch is disabled. en input the 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 r pd . 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 part temp range top mark pin- package max14634ewc+t -40 n c to +85 n c aco 12 wlp package type package code outline no. land pattern no. 12 wlp w121f1+1 21-0449 refer to application note 1891 max14634 pwrb pwra gnd en r pd internal bias circuit max14634 ultra-low on-resistance and compact bidirectional battery switch maxim integrated
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 160 rio robles, san jose, ca 95134 usa 1-408-601-1000 7 ? 2012 maxim integrated products, inc. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. revision history revision number revision date description pages changed 0 5/12 initial release 1 1/13 updated absolute maximum ratings section 2 max14634 ultra-low on-resistance and compact bidirectional battery switch
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