mic5396 / 7/8/9 low - power dual 300ma ldo revision 1.1 micrel inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel +1 ( 408 ) 944 - 0800 ? fax + 1 (408) 474 - 1000 ? http://www.m icrel.com january 1 4 , 2013 r evision 1.1 general description the mic5396/7/8/9 is an advanced dual ldo ideal for powering general purpose portable devices. the mic5396/7/8/9 provides two high - performance , independent 300ma ldos in a single package. this makes it possible to improve system efficie ncy by providing two independent supply inputs that can be optimized for each individual ldo. the mic5396/7/8/9 also features a wide output voltage range down to 1.0v. its full feature set and low dropout voltage make it ideal for battery - pow ered applicat ions. the mic5396/7/8/9 offers 2% accuracy, low dropout voltage ( 160mv at 300ma ) , and low ground current (typically 4 2 a per ldo at full load). the mic5396/7/8/9 can also be put into a zero off mode current state, drawing virtually no current when disabled . when the mic5397/9 is disabled an internal resistive load is automatically applied to the output to discharge the output capacitor. in addition, the mic5398/9 offers an internal enable pull - down resistor to ensure that the output is disabled when the en able is in tri - state mode. these ldo ?s also offer fast transient response and high psrr while consuming a minimum operating current. the family is available in a tiny 8 - pin, 1.2mm x 1.6mm leadless extra thin dfn package. data sheets and support documentati on can be found on micrel?s web site at www.micrel.com . features ? 2.5v to 5.5v input voltage range ? independent power inputs ? output voltage range from 1v to 3.3v ? two 300ma outputs ? high output accuracy ( 2%) ? low quiesc ent current ? 37 a typical/ldo ? stable with 1f ceramic output capacitors ? low dropout voltage (16 0mv at 300ma) ? independent enable pins ? internal enable pull - down (mic5398, mic5399) ? output discharge circuit (mic5397, mic5399) ? thermal - shutdown protection ? curr ent - limit protection ? 8 - pin 1.2mm x 1.6mm extra thin dfn package applications ? smart phones ? dsc, gps, pmp and pdas ? m edical devices ? portable electronics ? 5v systems ____________________________________________________________________________________________ _______________ typical application
micrel, inc. mic5396/7/8/9 january 1 4 , 2013 2 r evision 1.1 absolute maximum ratings supply voltage (v in1, v in2 ) ............................... ? 0.3v to +6v enable voltage (v en1, v en2 ). .............................. ? 0.3v to v in power dissipation (p d ) .............................. internally limited lead temperature (soldering, 10sec.) ....................... 260c junction temperatu re (t j ) ........................ ? 40c to +125c storage temperature (t s ) ......................... ? 65c to +150c esd rating ..................................................................... 3kv operating ratings supply voltage (v in1, v in2 ) .............................. +2.5v to 5.5v enable voltage (v en1, v en2 ). ................................... 0v to v in junction temperature (t j ) ........................ ? 40c to +125c junction thermal resistance 1.2mm x 1.6mm extra thin dfn ( ja ) .......... 172.6 c/w ordering information part number (1) marking code v out1 /v out2 (1) en discharge circuit output discharge circuit junction temperature range mic5396 - gmymx rj 1.8v/2.8v ?? ? ? 40c to +125 c mic5397 - gpymx rz 1.8v/3.0v ? x ? 40c to +125 c mic5398 - p4ymx rp 3.0v/1.2v x ? ? 40c to +125 c mic5399 - ssymx rd 3.3v/3.3v x x ? 40c to +125 c mic5399 - smymx 1r 3.3v/2.8v x x ? 40c to +125 c mic5399 - sgymx rm 3.3v/1.8v x x ? 40c to +125 c mic5399 - mmymx 2r 2.8v/2.8v x x ? 40c to +125 c mic5399 - gpymx (2 ) 3r 1.8v/3.0v x x ? 40c to +125 c mic5399 - gmymx 4r 1.8v/2.8v x x ? 40c to +125 c note s : 1. other v oltage s are available. contact micrel for details. 2. contact micrel marketing to order. micrel, inc. 2180 fortune drive san jose, ca 95131 usa tel +1 (408) 944 - 0800 fax +1 (408) 474 - 1000 web http://www.micrel.com micrel ma kes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data s heet. this information is not intended as a warranty and micrel does not assume responsibility for its use. micrel reserves the ri ght to change circuitry, specifications and descriptions at any time without notice. no license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document . except as provided in micrel?s terms and conditions of sale for such products, micrel assumes no liability whatsoever, and micrel disclaims any express or implied warranty relating to the sale and/or use of micrel products including liability or warrant ies relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right . ? 2012 micrel, incorporated.
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