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| SP4425 Datasheet, PDF (1/14 Pages) Sipex Corporation – Electroluminescent Lamp Driver Low Voltage Applications | |||
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SP4425
Electroluminescent Lamp Driver
Low Voltage Applications
s Low Voltage, Single Battery Operation
(VBATTERY > 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 VPP signals, making it ideal for
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.
COSC 1
VSS 2
COIL 3
D1 4
SP4425
8 HON
7 VDD
6 EL1
5 EL2
SP4425 Block Diagram
SP4425DS/20
SP4425 Electroluminescent Lamp Driver
1
© Copyright 2000 Sipex Corporation
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