ver: 0.91 jan 09, 2012 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5752/G5752a global mixed-mode technology 2a step-down dc/dc features ? 2a output current ? 0.18 internal power mosfet switch ? stable with low esr output ceramic capaci- tors ? up to 95% efficiency ? 30a shutdown mode ? fixed 380khz frequency ? thermal shutdown ? cycle-by-cycle over current protection ? wide 4.5v to 24v operating input range ? output adjustable from 1.22v to 21.6v(G5752) ? output adjustable from 0.92v to 21.6v(G5752a) ? available in sop-8 & msop-10 (fd) package applications ? pc monitors ? dsl modems ? distributed power systems ? pre-regulator for linear regulators general description the G5752/G5752a is a monolithic step-down switch mode regulator with a built in internal power mosfet. it achieves 2a continuous output current over a wide input supply range with excellent load and line regulation. current mode operation provides fast transient re- sponse and eases loop stabilization. fault condition protection includes cycle-by-cycle cur- rent limiting, output short circuit protection and thermal shutdown. in shutdown mode the regulator draws 30a of supply current. programmable soft-start over- writes the internal soft-start for various requirement of output power up ramp and minimizes the inrush supply current at initial startup. the G5752/g 5752a r equires a minimum number of readily available standard external components. it is available in a sop-8 & msop-10 (fd) package. ordering information order number marking temp. range package (green) G5752p11u G5752 -40 c to +85 c sop-8 G5752ap11u G5752a -40 c to +85 c sop-8 G5752f61u G5752 -40 c to +85 c msop-10 (fd) G5752af61u G5752a -40 c to +85 c msop-10 (fd) note: p1: sop-8 f6: msop-10 (fd) 1: bonding code u : tape & reel pin configuration typical application circuit output 3.3v/2a r1 26.1k 1% l1 15h d1 c5 10nf 4/6 bs in en ss lx fb comp gnd G5752a c1 10f 35v c2 22f/35v ceramic r2 10k 1% on c3 3.9nf r3 10k c6 open input 4.5v to 24v c4 10nf off 1/2 8/10 note: recommend connecting the thermal pad to the ground for excellent power dissipation. nc 10 8 7 1 2 3 4 nc bs in ss en comp fb msop-10 (fd) 9 6 5 lx gnd thermal pad G5752/G5752a sop-8 G5752/G5752a lx 8 6 5 1 2 3 4 bs in gnd ss en comp fb 7 output 2.5v/2a r1 10.5k 1% l1 15h d1 3/5 5/7 c5 10nf 4/6 6/8 bs in en ss lx fb comp gnd G5752 c1 10f 35v c2 22f/35v ceramic r2 10k 1% on c3 3.9nf r3 10k c6 open input 4.5v to 24v c4 10nf off 1/2 2/4 7/9 8/10 sop-8 / msop-10 (fd) pin no. 2/4 3/5 5/7 6/8 7/9 note: recommend choosing the small vf of diode to avoid lx to gnd smaller then -0.7v. output 3.3v/2a r1 26.1k 1% l1 15h d1 c5 10nf 4/6 bs in en ss lx fb comp gnd G5752a c1 10f 35v c2 22f/35v ceramic r2 10k 1% on c3 3.9nf r3 10k c6 open input 4.5v to 24v c4 10nf off 1/2 8/10 note: recommend connecting the thermal pad to the ground for excellent power dissipation. nc 10 8 7 1 2 3 4 nc bs in ss en comp fb msop-10 (fd) 9 6 5 lx gnd thermal pad G5752/G5752a sop-8 G5752/G5752a lx 8 6 5 1 2 3 4 bs in gnd ss en comp fb 7 output 2.5v/2a r1 10.5k 1% l1 15h d1 3/5 5/7 c5 10nf 4/6 6/8 bs in en ss lx fb comp gnd G5752 c1 10f 35v c2 22f/35v ceramic r2 10k 1% on c3 3.9nf r3 10k c6 open input 4.5v to 24v c4 10nf off 1/2 2/4 7/9 8/10 sop-8 / msop-10 (fd) pin no. 2/4 3/5 5/7 6/8 7/9 note: recommend choosing the small vf of diode to avoid lx to gnd smaller then -0.7v.
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