SP4425DS/20

SP4425 Electroluminescent Lamp Driver

© Copyright 2000 Sipex Corporation

1

SP4425

Electroluminescent Lamp Driver

Low Voltage Applications

s Low Voltage, Single Battery Operation

(V

s DC to AC Inverter for EL Backlit

Display Panels

s Externally Adjustable Internal Oscillator

s Low Current Standby Mode

APPLICATIONS

s Pagers

s Digital Watches

s Backlit LCD Displays

DESCRIPTION

The SP4425 is a high voltage output DC-AC converter that can operate from a single 1.5 VDC

power supply. The SP4425 is capable of supplying up to 220 V

driving electroluminescent lamps. The device features 1

µA (typical) standby current for use

in low power portable products. One external inductor is required to generate the high voltage

charge and one external capacitor is used to select the oscillator and lamp frequencies.

The SP4425 is offered in both an 8-pin narrow SOIC and 8-pin micro SOIC package.

For delivery in die form, please consult the factory.

SP4425 Block Diagram

HON

D1

COIL

EL2

EL1

SP4425

8

7

4

3

2

1

5

6

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