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SP4446EK/TR Datasheet

  • SP4446EK/TR

  • High Output Voltage Boost Regulator LCD Bias Regulator

  • 169.81KB

  • 10頁

  • SIPEX

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廬
PRELIMINARY
SP4446
High Output Voltage Boost Regulator
LCD Bias Regulator
FEATURES
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High Output Voltage: Up to 30V
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High Efficiency
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Low Quiescent Current: ~20uA
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Miniature Package: (5-lead SOT-23)
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Single Battery Cell Operation
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Programmable Output Voltage
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1鈩?Switch (150mV at 150mA)
APPLICATIONS
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LCD Bias
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Tuner Pin Voltage
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White LED Driver
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High Voltage Bias
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Digital Cameras
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Cell Phone
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Battery Backup
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Handheld Computers
VIN
SHDN
5
4
SP4446
5 Pin SOT-23
1
SW
2
GND
3
FB
Now Available in Lead Free Packaging
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
V
IN
SP4446
SHDN GND
C1
4.7碌F
R2
FB
2.2
碌F
L1
10碌H
SW
R1
C2
D1
High
Voltage Output
Rev. 7/14/03
SP4446 High Output Voltage Boost Regualtor, LCD Bias Regulator
漏 Copyright 2003 Sipex Corporation
1

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