G5931 Global Mixed-mode Technology Inc. Switched Capacitor Voltage Inverter Features General Description Inverts Input Supply Voltage 25mA Output Current with a Voltage Drop of 250mV 0.45mA Quiescent Current at 3.3V Supply Voltage 99% Voltage Conversion Efficiency 1.8V to 5V operating range Require Only Two Capacitors Over-Temperature Protection 8-Pin SOP Package The G5931 is an unregulated charge-pump voltage inverter which may be used to generate a negative supply from positive input. Input voltages ranging from +1.8V to +5V can be inverted into a -1.8V to -5V output supply. The devices is ideal for both battery- powered and board level voltage conversion applications with a typical operating current of 0.45mA at 3.3V supply. The G5931 can deliver 25mA output current with a voltage drop of 250mV. The parts are over -temperature protected. Applications Cell Phone Small LCD Panels Portable Equipment Handy-Terminals, PDAs Battery-Operated Equipment Applications include cell phones, PDAs, and other portable equipment. The devices is available in 8-pin SOP Package. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Pb free) G5931P1U G5931 -40°C to 85°C SOP-8 Note: P1 : SOP-8 U: Tape & Reel Pin Configuration Typical Application Circuit G5931 1 NC 1 8 IN CP+ 2 7 NC GND 3 6 NC CP- 4 5 OUT 2 C1 3 4 8 NC IN CP+ NC 7 GND NC 6 CP- OUT VIN (1.8V to 5V) C3 5 C2 SOP-8 C1,C2,C3: 1µF MLCC (X5R) TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 Sep 09, 2005 1