SP4422A

® SP4422A Electroluminescent Lamp Driver s 2.2V-5.0V Battery Operation s 50nA Typical Standby Current s High Voltage Output 160 VPP typical s Internal Oscillator APPLICATIONS s PDAs s Cellular Phones s Remote Controls s Handheld Computers DESCRIPTION The SP4422A is a high voltage output DC-AC converter that can operate from a 2.2V-5.0V power supply. The SP4422A is capable of supplying up to 220 VPP signals, making it ideal for driving electroluminescent lamps. The device features 50 nA (typical) standby current, for use in low power portable products. One external inductor is required to generate the high voltage, and one external capacitor is used to select the oscillator frequency. The SP4422A is offered in an 8-pin narrow and 8-pin micro SOIC packages. For delivery in die form, please consult the factory. HON VSS COIL EL2 1 2 3 4 SP4422 8 7 6 5 CAP 2 CAP 1 VDD EL1 SP4422A Block Diagram SP4422ADS/15 SP4422A Electroluminescent Lamp Driver © Copyright 2000 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VDD............................................................................................................7.0V Input Voltages/Currents HON (pin1).....................................