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SP4416UEB

Electroluminescent Lamp Driver with 4-Level Light Intensity Selection Feature

Signal Processing Technologies 

®

SP4416

Electroluminescent Lamp Driver with

4-Level Light Intensity Selection Feature

s 4-Level, Software Selectable Light

Intensity Function

s 75%-80%-85%-100% Intensity

Level Options

s Extends Standby Time & Battery Life

when used in Conjunction with Power

Management Devices

s Requires only 2 External Components:

Oscillator Setting Capacitor and Inductor

s Low Power +3.3V Operation

s 100nA Standby Current

s Space-Saving 10-pin µSOIC Package

APPLICATIONS

s Cellular Phones

s LCD Displays & Keypads

s PDAs

s Handheld Portable Electronic Devices

DESCRIPTION

The SP4416 is a high voltage output DC-AC converter that operates from a 3.3V battery and

generates up to 220VPP AC output. As with Sipex's other electroluminescent driver products,

the AC output is used to generate light in an electroluminescent lamp. The SP4416 incorporates

an intensity select feature within the enable circuit so that the user can program the desired

light intensity. The SP4416 uses only two external components to generate light; the oscillator

capacitor and inductor. The ENLI pin is used for either an enable function or a step-up intensity

function. Four light intensities can be set by strobing the ENLI pin in a defined time period.

The SP4416 with the intensity function can be used in cellular phone applications, PDA's, and

other hand-held CPU controlled equipment.

COSC2

1

COSC1 2

VSS

3

EL1 4

CS

5

SP4416EU

10 ENLI

9 VDD

8 VEE

7 EL2

6 COIL

SP4416DS/06

SP4416 Electroluminescent Lamp Driver with 4-Level Light Intensity Selection Feature

1

© Copyright 1999 Sipex Corporation

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