ver: 1.6 apr 17, 2013 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5695 global mixed-mode technology 1.4mhz 1a synchronous step-down regulator features ? high efficiency: up to 93% ? low quiescent current: only 50 a during op- eration ? internal soft start function ? 1a output current ? 2.5v to 6v input voltage range ? 1.4mhz switching frequency ? no schottky diode required ? 100% duty cycle in dropout operation ? 0.6v reference allows low output voltages ? <1 a shutdown current ? current mode operation for excellent line and load transient response ? over temperature protected ? rohs compliant applications ? cellular telephones ? personal information appliances ? microprocessors and dsp core supplies ? wireless and dsl modems ? digital still and video cameras ? mp3 players ? portable instruments general description the G5695 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. supply current during operation is only 50 a and drops to <1 a in shutdown. the 2.5v to 6v input voltage range makes the G5695 ideally suited for single li-ion battery-powered applications. 100% duty cycle provides low dropout operation, ex- tending battery run time in portable systems. switching frequency is internally set at 1.4mhz, allowing the use of small surface mount inductors and capacitors. the internal synchronous switch increase efficiency and eliminates the need for an external schottky diode. built-in soft start function eliminates in-rush current that could damage the system. ordering information order number marking output voltage temp. range package (green) G5695t11u 5695x adjustable -40 c~ +85 c sot-23-5 G5695to1u 5695x adjustable -40 c~ +85 c tsot-23-5 G5695rb1u 5695 adjustable -40 c~ +85 c tdfn2x2-6 note:t1: sot-23-5 to:tsot-23-5 rb: tdfn2x2-6 1: bonding code u: tape & reel pin configuration typical application circuit vin lx en vfb gnd G5695 c in 2.2 f cer v in 4~6v 3 15 4 2.2 h c fb r1 82k r2 18k c out 10 f cer v out 3.3v 300ma * (option) v out = 0.6v (1+ ) r1 r2 lx vfb sot-23-5/tsot-23-5 5 4 1 vin 2 3 gnd en G5695 2 tdfn2x2-6 1 2 3 6 5 4 thermal pad G5695 en nc vin lx gnd vfb note: recommend connecting the thermal pad to the ground for excellent power dissipation. vin lx en vfb gnd G5695 c in 2.2 f cer v in 4~6v 3 15 4 2.2 h c fb r1 82k r2 18k c out 10 f cer v out 3.3v 300ma * (option) v out = 0.6v (1+ ) r1 r2 lx vfb sot-23-5/tsot-23-5 5 4 1 vin 2 3 gnd en G5695 lx vfb sot-23-5/tsot-23-5 5 4 1 vin 2 3 gnd en G5695 2 tdfn2x2-6 1 2 3 6 5 4 thermal pad G5695 en nc vin lx gnd vfb note: recommend connecting the thermal pad to the ground for excellent power dissipation. tdfn2x2-6 1 2 3 6 5 4 thermal pad G5695 en nc vin lx gnd vfb note: recommend connecting the thermal pad to the ground for excellent power dissipation.
|
