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SPX29301

3A High Current, Low Dropout Voltage Regulator

Signal Processing Technologies 

SPX29300/01/02/03

3A High Current, Low Dropout Voltage Regulator

Adjustable & Fixed Output, Fast Response Time

FEATURES

■ Adjustable Output Down To 1.25V

■ 1% Output Accuracy

SPX29300

3 Pin TO-263

■ Output Current of 3A

1 23

■ Low Dropout Voltage of 450mV @ 3A

■ Extremely Tight Load and Line

Regulation

■ Extremely Fast Transient Response

VIN GND VOUT

Now Available in Lead Free Packaging

■ 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

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

DESCRIPTION

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.

TYPICAL APPLICATIONS CIRCUITS

VIN

+

6.8μF

1 SPX29300 3

2

VOUT

+ 10μF

VIN

+

6.8μF

1 SPX29302 4

2

3

GND

5

ADJ

VOUT

R1+ 10μF

R2

Figure 1. Fixed Output Linear Regulator

Figure 2. Adjustable Output Linear Regulator

Date: 9/5/06 Rev C

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

1

© 2006 Sipex Corporation

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