SP4446_06 Datasheet, PDF (1/10 Pages) Sipex Corporation – High Output Voltage Boost Regulator LCD Bias Regulator

®
SP4446
High Output Voltage Boost Regulator
LCD Bias Regulator
FEATURES
■ High Output Voltage: Up to 30V
■ High Efficiency
■ Low Quiescent Current: ~20uA
■ Miniature Package: (5-lead SOT-23)
■ Single Battery Cell Operation
■ Programmable Output Voltage
■ 1Ω Switch (150mV at 150mA)
APPLICATIONS
■ LCD Bias
■ Tuner Pin Voltage
■ White LED Driver
■ High Voltage Bias
VIN
SHDN
5
4
SP4446
5 Pin SOT-23
1
2
3
SW
GND
FB
Now Available in Lead Free Packaging
■ Digital Cameras
■ Cell Phone
■ Battery Backup
■ Handheld Computers
DESCRIPTION
The SP4446 is a micro power Boost Regualtor in a 5-lead SOT-23 package. It is a current limited,
fixed off-time regulator configured for use in boost mode applications. The operating voltage can
be less than 3V and is capable of generating voltages as high as 30 Volts.
The SP4446 is to be supplied in a SOT-23-5 and permits the construction of complete regulators
that occupy < 0.2 square inches of board space.
TYPICAL APPLICATION SCHEMATIC
V_IN
2 to 7V
C1
4.7µF
L1
D1
10µH
V_IN
SW
R1
SP4446
SHDN _GND
FB
R2
High
Voltage Output
C2
2.2 µF
Date: 1/2/06
SP4446 High Output Voltage Boost Regualtor, LCD Bias Regulator
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© Copyright 2006 Sipex Corporation