SP4412A

® SP4412A Electroluminescent Lamp Driver s 2.2 V- 3.6 V Battery Operation s 50 nA Maximum Standby Current (10 nA typical) s High Voltage Output Typical 160 VPP s External Oscillator Required s Enable Control Pin APPLICATIONS s Watches s Pagers s Backlit LCD Displays DESCRIPTION The SP4412A is a high voltage output DC-AC converter that can operate from a 2.2V-3.6V power supply. The SP4412A is capable of supplying up to 250 VPP signals, making it ideal for driving small electroluminescent lamps. The device features 10 nA (typical) standby current, for use in low power portable products. An inductor is used to generate the high voltage, and an external oscillator is needed as a clock source. The SP4412A is offered in an 8-pin narrow SOIC package or an 8-pin µSOIC package. For delivery in die form, please consult the factory. HON No Connect Osc Input VSS 1 2 3 4 SP4412A 8 VDD 7 EL2 6 EL1 5 COIL SP4412A Block Diagram SP4412ADS/12 SP4412ACN 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..................................................................................................5.0 V Input Voltages/Currents HON (pin 1)...................