ver: 0.1 apr 30, 2008 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5632 global mixed-mode technology inc. 2a buck converter features ? 5v to 14v input supply range ? up to 95% efficiency ? synchronous switches ? no external schottky diodes needed ? internal soft start ? output voltage adjustable to 0.8v ? 2a continuous output current ? fixed 500khz switching frequency ? pwm/pfm operations ? cycle-by-cycle current limit ? short circuit protection ? thermal shutdown ? sop-8 package applications ? note book computers ? portable dvd players ? optical storages ? lcd panels ? telecom equipments ? portable devices general description the G5632 is a high efficiency, 2a buck converter with two low r ds(on) switches. it operates from 5v to 14v input voltage range, and provides up to 2a continuous output current with the output voltage adjustable down to 0.8v. whenever the load is light, the G5632 auto- matically change the pwm operation mode to pfm operation to minimize the power consumption. hence it is suitable for battery-powered devices. the G5632 is available in a sop-8 package. ordering information order number marking temp. range package (pb free) G5632p11u G5632 -40 c to +85 c sop-8 note: p1:sop-8 1: bonding code u: tape & reel pin configuration typical application circuit fb gnd 8 6 5 1 2 3 4 pgnd in lx sop-8 G5632 lx comp en in v in 5.5v~14v en comp c1 10 f r c c c gnd pgnd fb lx r1 r2 c2 47 f l1 4.7 h v out , 2a G5632 on off v out = 0.8 ( 1+ ) r1 r2 7 fb gnd 8 6 5 1 2 3 4 pgnd in lx sop-8 G5632 lx comp en in v in 5.5v~14v en comp c1 10 f r c c c gnd pgnd fb lx r1 r2 c2 47 f l1 4.7 h v out , 2a G5632 on off v out = 0.8 ( 1+ ) r1 r2 7
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