SP4415 Datasheet, PDF (1/10 Pages) Sipex Corporation – Electroluminescent Lamp Driver with Selectable Level Outputs

SIGNAL PROCESSING EXCELLENCE
SP4415
Electroluminescent Lamp Driver
with Selectable Level Outputs
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_PP Typical
s High Impedance Clock Signal
Conditioner
APPLICATIONS
s Watches
s Pagers
s Backlit LCD Displays
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.
No Connect ¹
V_SS 2
COIL 3
EL2 ⁴
SP4415
8 CLK
7 Level Select
6 V_DD
5 EL1
SP4415 Block Diagram
SP4415DS/06
SP4415 Electroluminescent Lamp Driver
1
© Copyright 1996 Sipex Corporation