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SP4425Q Datasheet(PDF) 7 Page - Sipex Corporation

Part # SP4425Q
Description  Electroluminescent Lamp Driver for Low Noise Applications
PDF  12 Pages
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP4425Q Datasheet(HTML) 7 Page - Sipex Corporation

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SP4425QDS/12
SP4425Q Electroluminescent Lamp Driver
© Copyright 1998 Sipex Corporation
7
Figure 5. Typical SP4425Q Application Circuit
HON=VDD=ON
HON=0V=OFF
0.1
µF Low ESR
Decoupling
Capacitor
EL Lamp
5Ftl
1.5 sq.in.
4nF
NOTE:
Keep high voltage traces
short and away from VDD
and clock lines
HON
VDD
EL1
EL2
COSC
VSS
Coil
D1
COSC=180pF
CINT=820pF
SP4425Q
VIN=3.0V
NOTE:
Keep coil as close to
SP4425Q as possible
IN4148
Handset Application
+
–
QR1 = 5k
Ω
QR2 = 5k
Ω
Figure 6. SP4425Q 3V Test Circuit
HON=VDD=ON
HON=0V=OFF
0.1
µF Low ESR
Decoupling
Capacitor
NOTE:
Keep high voltage traces
short and away from VDD
and clock lines
HON
VDD
EL1
EL2
COSC
VSS
Coil
D1
COSC=180pF
CINT=820pF
SP4425Q
VIN=3V
NOTE:
Keep coil as close to
SP4425 as possible
IN4148
+
–
3.9nF
QR1 = 15k
Ω
QR2 = 15k
Ω
Test Load
700k
Ω



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