SP4424

® SP4424 Electroluminescent Lamp Driver Dual Oscillators s DC to AC Inverter for EL Backlit Display Panels s 2.2V - 5.0V Battery Operation s Dual Oscillator Operation for Application Flexibility s Low Current Standby Mode APPLICATIONS s PDAs s Cellular Phones s Remote Controls s Hand Held Computers DESCRIPTION The SP4424 is a high voltage output DC-AC converter that can operate from a single battery supply voltage as low as 2.2V. The SP4424 is capable of supplying up to 220 VPP signals, making it ideal for driving electroluminescent lamps. The device features 5µA (maximum) standby current, for use in low power portable products. An inductor is used to generate high voltage pulses, and two external capacitors are used to select the inductor and the lamp oscillator frequencies. The SP4424 is offered in both an 8-pin narrow SOIC and 8-pin micro SOIC packages. For delivery in die form, please consult the factory. CCOIL VSS COIL EL1 1 2 3 4 SP4424 8 7 6 5 CLAMP HON VDD EL2 SP4424 Block Diagram SP4424DS/16 SP4424 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................................................................................