The SGM3204 generates an unregulated negative output voltage from an input voltage ranging from 1.4V to 5.5V。The device is typically supplied by a pre-regulated supply rail of 5V or 3.3V. Due to its wide input voltage range，two or three NiCd，NiMH， or alkaline battery cells， as well as one Li-ion cell can also power them。

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SGM3204 Unregulated 200mA Charge Pump Voltage Inverter FEATURES Inverts Input Supply Voltage Up to 200mA Output Current Input Voltage Range from 14V to 55V Quiescent Current 15mA TYP 950kHz Switching Frequency Integrated Active Schottky Diode for StartUp into Load 40 to 85 Operating Temperature Range Available in Green SOT236 Package APPLICATIONS LCD Bias GaAs Bias for RF Power Amps Sensor Supply in Portable Instruments Bipolar Amplifier Supply GENERAL DESCRIPTI......