ver: 0.3 apr 19, 2011 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5934 global mixed-mode technology inc. high voltage 1.5x charge pump with load switch controller features ? input range: 8v to 24v ? output range: 12v to 36v ? 150 a quiescent current at 8v supply voltage and 190 a quiescent current at 24v supply voltage ? 3% regulated output ? power good function ? power good of open drain (monitor ac v in only) ? embedded a 12-v ldo ? 4 control signal inputs ? 4 12v-drivers for external nmos switches ? 4 discharging networks for 22 ? over-temperature protection ? output short circuit protection ? tqfn3x3-20 package applications ? notebook computers general description the G5934 is a high-voltage switched-capacitor charge pump that provides the regulated output volt- age of 1.5x input voltage. input voltages ranging from 8v to 24v can be converted into a 12v to 36v output supply. the device is ideal for battery-powered con- version applications in notebook computers with a typical operating current of 150 a at 8v supply and 190 a at 24v supply. the G5934 has a nmos open-drain output pin for power good indication. when v out > 1.5 x v in x 90%, the nmos will be turned off immediately and pg pin will be pulled high by external resistor. the G5934 contains an embedded 12-v ldo to pro- vide the supply voltage to the drivers controlled by on signals. the discharging networks are connected to the 22 resistor to shut down the low-voltage system while control input signals on are not ready. the G5934 contains an over-temperature circuit to protect the device under continuous output short cir- cuit conditions. the G5934 is available in tqfn3x3-20 package (thermal pad included). ordering information order number marking temp. range package (green) G5934rz1u 5934 -40 c to +85 c tqfn3x3-20 note: rz: tqfn3x3-20 1: bonding code u: tape & reel pin configuration note: recommend connecting the thermal pad to the ground for excellent power dissipation. tqfn3x3-20 1 2 3 4 5 11 12 13 14 15 16 17 18 20 19 8 7 9 10 thermal pad 6 on2 on1 on3 on4 disc1 disc2 disc3 disc4 driver1 driver2 driver3 driver4 reg vsense pg d_cap vout cp cn vin 21 gnd note: recommend connecting the thermal pad to the ground for excellent power dissipation. tqfn3x3-20 1 2 3 4 5 11 12 13 14 15 16 17 18 20 19 8 7 9 10 thermal pad 6 on2 on1 on3 on4 disc1 disc2 disc3 disc4 driver1 driver2 driver3 driver4 reg vsense pg d_cap vout cp cn vin 21 gnd
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