1

Date: 5/25/04

SPX29300/01/02/03 3A Low Dropout Voltage Regulator

© Copyright 2004 Sipex Corporation

3A High Current, Low Dropout Voltage Regulator

Adjustable & Fixed Output, Fast Response Time

SPX29300/01/02/03

FEATURES

■ Adjustable Output Down To 1.25V

■ 1% Output Accuracy

■ Output Current of 3A

■ Low Dropout Voltage of 450mV @ 3A

■ Extremely Tight Load and Line

Regulation

■ Extremely Fast Transient Response

■ Reverse-Battery Protection

■ Zero Current Shutdown (5 pin version)

■ Error Flag Signal Output for Out of

Regulation State (5 pin version)

■ Standard TO-220 and TO-263

Packages

®

The SPX29300/01/02/03 are 3A, highly accurate voltage regulators with a low drop out

voltage of 450mV dropout (typical) @ 3A. These regulators are specifically designed for low

voltage applications that require a low dropout voltage and a fast transient response. They

are fully fault protected against over-current, reverse battery, and positive and negative

voltage transients. On-Chip trimming adjusts the reference voltage to 1% initial accuracy.

Other features in the 5 pin versions include Enable, and Error Flag.

The SPX29300/01/02/03 are offered in 3 & 5-pin TO-220 & TO-263 packages. For a 1.5A

version, refer to the SPX29150 data sheet.

APPLICATIONS

■ Powering VGA & Sound Card

■ Power PC™ Supplies

■ SMPS Post Regulator

■ High Efficiency “Green” Computer

Systems

■ High Efficiency Linear Power Supplies

■ Constant Current Regulators

■ Adjustable Power Supplies

■ Battery Charger

Figure 1. Fixed Output Linear Regulator

Figure 2. Adjustable Output Linear Regulator

SPX29302

V

OUT

V

IN

GND

ADJ

1

2

3

4

5

R1

R2

6.8µF

++

10µF

SPX29300

V

OUT

V

IN

6.8µF

+

+

10µF

1

2

3

DESCRIPTION

Now Available in Lead Free Packaging

12

3

SPX29300

3 Pin TO-263

GND

V

IN

V

OUT

TYPICAL APPLICATIONS CIRCUITS