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SPX1129M3-L-3-3

400mA Low Dropout Voltage Regulator

Signal Processing Technologies 

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SPX1129

TM

400mA Low Dropout Voltage Regulator

FEATURES

■ 1% Output Accuracy 3.3V, 5V,

at 500mA Output

■ Very Low Quiescent Current

■ 0.42V Dropout Voltage at 400mA

■ Extremely Tight Load and Line Regulation

■ Current & Thermal Limiting

■ Reverse Battery Protection

■ Equivalent Replacement For LT1129

APPPLICATIONS

■ Power Supply

■ Communications Equipment

■ Computers and Peripherals

SPX1129

3 Pin TO-263

SPX1129

1 23

3 Pin TO-220

1 23

Note:

Tab is Ground

VOUT GANvD aiVlIaN blfeorinalLl e4apdacFkraegeePs.ackaging

SPX1129

3 Pin SOT-223

1 23

VIN GND VOUT

VOUT GND VIN

SPX1129 3

TO-252 2

1

VIN

GND

VOUT

Now Available in Lead Free Packaging

DESCRIPTION

The SPX1129 is a low power voltage regulator. This device is an excellent choice for use in battery-powered

applications such as cordless telephones, radio control systems, and portable computers. The SPX1129

features very low quiescent current and very low dropout voltage of 0.42 volts. This includes a tight initial

tolerance of ±1% max, and a very low output temperature coefficient, making the SPX1129 useful as a low-

power voltage reference.

The SPX1129 is offered in a SOT-223, TO-220, TO-252 & TO-263 3 lead packages.

VIN

IIN

+

0.1µF

IIN= I L+ I G

TYPICAL APPLICATION CIRCUIT

IN

OUT

SPX1129

GND

5V

+

2.2µF

IL

LOAD

IG

Fixed +5V Regulator Circuit..

Mar13-07

SPX1129 400 mA Low Dropout Linear Regulator



© 2007 Sipex Corporation

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