SP4415DS/06

SP4415 Electroluminescent Lamp Driver

© Copyright 1996 Sipex Corporation

1

s 2.2 V- 3.6 V Battery Operation

s 50 nA Maximum Standby Current

s Four Level Selectable Output

s High Voltage Output 140V

s High Impedance Clock Signal

Conditioner

APPLICATIONS

s Watches

s Pagers

s Backlit LCD Displays

SP4415

DESCRIPTION

The SP4415 is a single chip DC-AC converter ideally suited for driving electroluminescent

panels to four intensity levels. The SP4415 is capable of converting DC input voltages as low

as 2.2V into any of four AC voltage levels which can be set via external switch. A high

impedance clock input and signal conditioner allows users to connect crystal oscillators

directly to the CLK input without interfering with existing system timing, no buffering of the

crystal oscillator is necessary. The SP4415 requires only one external inductor and is offered

in an 8-pin NSOIC package. For delivery in die form, please consult the factory.

SP4415 Block Diagram

SIGNAL PROCESSING EXCELLENCE

Electroluminescent Lamp Driver

with Selectable Level Outputs

No Connect

Level Select

COIL

EL2

EL1

SP4415

8

7

4

3

2

1

5

6

CLK