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廬

SP4425

Electroluminescent Lamp Driver

Low Voltage Applications

s

Low Voltage, Single Battery Operation

(V

BATTERY

> 1.1 VDC)

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

PP

signals, making it ideal for

driving electroluminescent lamps. The device features 1

碌A

(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.

C

OSC

V

SS

COIL

D1

1

2

3

4

SP4425

8

7

6

5

HON

V

DD

EL1

EL2

SP4425 Block Diagram

SP4425DS/20

SP4425 Electroluminescent Lamp Driver

漏 Copyright 2000 Sipex Corporation

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