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| SP4438 Datasheet, PDF (4/19 Pages) Sipex Corporation – Ultra-Quiet Electroluminescent Lamp Driver For Cellular Phone Applications | |||
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VBATT
C1
0.1µF
ELEN
ROSC
714kâ¦
C2
1nF
2
VDD
1
ROSC 3
SP4438
5 COIL
6
CINT
4
87
VSS
EL1
EL2
EL Lamp
L1
820µH/14â¦
D1
1N4148
CINT
47nF
Figure 1: Typical Operating Circuit for the SP4438.
Note: C1 should be close to L1.
Rev. 11/13/00
SP4438 Ultra-Quiet Electroluminescent Lamp Driver
4
© Copyright 2000 Sipex Corporation
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