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SP4446

Sipex
Part Number SP4446
Manufacturer Sipex
Description High Output Voltage Boost Regulator LCD Bias Regulator
Published Jun 7, 2005
Detailed Description ® PRELIMINARY SP4446 High Output Voltage Boost Regulator LCD Bias Regulator FEATURES ■ High Output Voltage: Up to 30V...
Datasheet PDF File SP4446 PDF File

SP4446
SP4446

Overview
® PRELIMINARY 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 ■ Digital Cameras ■ Cell Phone ■ Battery Backup ■ 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 VIN 2 to 7V VIN SP4446 SHDN GND C1 4.
7µF R2 FB 2.
2 µF L1 10µH SW R1 C2 D1 High Voltage Output Rev.
7/14/03 SP4446 High Output Voltage Boost Regualtor, LCD Bias Regulator © Copyright 2003 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS VIN .
15V SW Voltage .
-0.
4 to 34V FB Voltage .
.
.
2.
5V All other pins .
.
.
.
-0.
3 to VCC + 0.
3V Current into FB .
.
.
.
±1mA TJ Max .
125°C Operating Temperature Range .
.
-40°C to 85°C Peak Output Current < 10us SW 500mA Storage Temperature .
.
-65°C to +150°C Power Dissipation.
.
200mW Lead Temperature (Soldering, 10 sec) .
.
300°C ESD Rating ...


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