ver: 0.7 dec 06, 2006 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5001 global mixed-mode technology inc. 300khz dc-dc step-down pwm controller features ? 3.3v, 2.5v, 1.8v fixed output or adjustable version ? external pmos switch ? available in sot-23-5 package ? input range 2.5v~5.5v ? output tolerance 2.5% ? oscillator frequency 300khz, 15% ? internal soft-start ? standby current 0.5 a (max) ? 1v reference voltage fo r adjustable version applications ? electronics information organizers ? palmtops ? cellular and portable phones ? portable audio systems ? various multi-function power supplies general description the G5001 series are pure voltage-mode pwm step-down dc/dc converter controllers with built-in high speed low on resistance drivers. large output currents are possible by using an exter- nally connected transistor, coil, diode. output voltage is selectable for 1.8, 2.5v, 3.3v ( 2.5%). for other output voltages the fb version, which has a 1v internal reference voltage, is available. with built-in uvlo function, the external switch will be forcibly switched off when used below the stipulated voltage. an internal soft start is available and the soft start time is set up internally. pin configuration typical application circuit vout (fb) ce sot-23-5 5 4 1 ext 2 3 vdd gnd v out c out 47 f 22 h c in 47 f v dd vdd ext gnd ce fb output external set-up version G5001 v out c out 47 f 22 h c in 47 f v dd vdd ext gnd ce vout output internal set-up version G5001 vout (fb) ce sot-23-5 5 4 1 ext 2 3 gnd G5001 t11 t12 vdd l m d c fb r fb1 r fb2 d m l G5001 v out = 1 ? ( 1 + r fb1 r fb2 ) vout (fb) ce sot-23-5 5 4 1 ext 2 3 vdd gnd v out c out 47 f 22 h c in 47 f v dd vdd ext gnd ce fb output external set-up version G5001 v out c out 47 f 22 h c in 47 f v dd vdd ext gnd ce vout output internal set-up version G5001 vout (fb) ce sot-23-5 5 4 1 ext 2 3 gnd G5001 t11 t12 vdd l m d c fb r fb1 r fb2 d m l G5001 v out = 1 ? ( 1 + r fb1 r fb2 )
ver: 0.7 dec 06, 2006 tel: 886-3-5788833 http://www.gmt.com.tw 2 G5001 global mixed-mode technology inc. ordering information order number marking voltage temp. range package (pb free) G5001-adjt11u eeadx adj -40 c~85 c sot-23-5 G5001-18t11u ee18x 1.8v -40 c~85 c sot-23-5 G5001-25t11u ee25x 2.5v -40 c~85 c sot-23-5 G5001-33t11u ee33x 3.3v -40 c~85 c sot-23-5 G5001-adjt12u 5eadx adj -40 c~85 c sot-23-5 G5001-18t12u 5e18x 1.8v -40 c~85 c sot-23-5 G5001-25t12u 5e25x 2.5v -40 c~85 c sot-23-5 G5001-33t12u 5e33x 3.3v -40 c~85 c sot-23-5 note: t1: sot-23-5 1 or 2 : bonding code u: tape & reel
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