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SP4480 Datasheet(PDF) 1 Page - Sipex Corporation

Part # SP4480
Description  Dual Electroluminscent Lamp Driver
Download  13 Pages
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP4480 Datasheet(HTML) 1 Page - Sipex Corporation

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SP4480DS/06
SP4480 Dual Electroluminescent Lamp Driver
© Copyright 2000 Sipex Corporation
1
s Backlights Keypad & LCD With A Single
El Driver
s A Single External IC Drives Dual EL
Lamps Simultaneously Or Independently
s A Single Coil Drives Both EL Lamp
s A Single Resistor Controls the Operating
Frequency
s DC-to-AC Inverter Produces Up To
200V
P-P
s Low Current Standby Mode Draws Less
Than 1
µA
DESCRIPTION
The SP4480 provides a designer with two electroluminescent lamp drivers for backlighting
solutions. The EL lamp outputs operate in opposite phase so he SP4480 device can be easily
implemented into applications driving two EL lamps simultaneously or driving double-sided,
multi-color EL lamps. The integration of a dual EL lamp driver in a cost-effective single IC
reduces component count and board space requirements. The SP4480 is ideal for portable
applications such as cellular phones, pagers, PDAs, medical equipment, and other designs
with liquid crystal displays, keypads, and backlit readouts. The SP4480 operates from a
+2.2V to +6.0V source. The device features a low power standby mode which draws less than
1
µA (maximum). The frequency of the internal oscillator is set with a single external resistor.
A single inductor is required to generate the high voltage AC outputs to drive the EL lamps.
All input pins are ESD protected with internal diodes to V
DD and VSS.
ELEN1
ELEN2
ROSC
no connect
VDD
EL2
EL1
EL3
1
2
3
4
11
12
13
14
no connect
no connect
VSS
5
6
7
EL4
COIL
8
9
10
CAP
SP4480
s +2.2V to +6.0V Battery Operation
Dual Electroluminscent Lamp Driver
SP4480


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