G5934 Global Mixed-mode Technology Inc. High Voltage 1.5x Charge Pump with Load Switch Controller Features General Description The G5934 is a high-voltage switched-capacitor charge pump that provides the regulated output voltage 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 conversion applications in notebook computers with a typical operating current of 150µA at 8V supply and 190µA at 24V supply. Input Range: 8V to 24V Output Range: 12V to 36V 150µA Quiescent Current at 8V Supply Voltage and 190µA Quiescent Current at 24V Supply Voltage ±3% Regulated Output Power Good Function Power Good of Open Drain (Monitor AC VIN Only) Embedded a 12-V LDO 4 Control Signal Inputs 4 12V-Drivers for external NMOS switches 4 Discharging Networks for 22Ω Over-Temperature Protection Output Short Circuit Protection TQFN3X3-20 Package The G5934 has a NMOS open-drain output pin for power good indication. When VOUT > 1.5 x VIN 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 provide the supply voltage to the drivers controlled by ON signals. The discharging networks are connected to the 22Ω 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 circuit conditions. Applications Notebook Computers The G5934 is available in TQFN3X3-20 package (thermal pad included). Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) 5934 -40°C to +85°C TQFN3X3-20 G5934RZ1U Note: RZ: TQFN3X3-20 1: Bonding Code U: Tape & Reel 1 2 15 PG 14 VSENSE VOUT D_CAP 16 CP 17 19 DISC2 10 DRIVER3 DRIVER2 11 9 12 5 DRIVER1 4 8 REG DRIVER4 DISC4 13 3 DISC3 DISC1 Thermal Pad 6 ON4 21 GND 7 ON3 18 VIN 20 ON1 ON2 CN Pin Configuration TQFN3X3-20 Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.3 Apr 19, 2011 1