Mar3-07

SPX29 400 mA Low Dropout Linear Regulator

© 2007 Sipex Corporation

SPX1129

Available in Lead Free Packaging

Solved by

TM

400mA Low Dropout Voltage Regulator

DESCRIPTION

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

TheSPX1129isalowpowervoltageregulator.Thisdeviceisanexcellentchoiceforuseinbattery-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.

+

2.2µF

+

SPX1129

I

IN

I

G

I

L

5V

IN

OUT

GND

LOAD

I

V

IN

0.1µF

Fixed +5V Regulator Circuit..

TYPICAL APPLICATION CIRCUIT

GND

V

OUT

V

IN

3

2

1

SPX1129

3 Pin TO-220

1

2

3

SPX1129

3 Pin TO-263

GND

V

IN

V

OUT

V

OUT

GND

V

IN

TO-252

3

2

1

SPX1129

Now Available in Lead Free Packaging

1

2

3

SPX1129

3 Pin SOT-223

GND

V

IN

V

OUT

Note:

Tab is Ground

for all 4 packages.