DESCRIPTION

FEATURES

■ Adjustable Output Down to 1.25V

■ 1% Output Accuracy

■ Output Current of 5A

■ Low Dropout Voltage: 420mV @ 5A

■ Tight Line Regulation: 0.06%

■ Load Regulation: 0.2%

■ Fast Transient Response

■ Reverse-Battery Protection

■ Current Limit and Thermal Protection

The SPX29501/02 are 5A highly accurate voltage regulators with a low dropout voltage of 420mV

@ 5A. 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 include Enable, and Error Flag.

The SPX295001/02 are offered in 5-pin TO-220 & TO-263 packages. For a 1.5A version, refer

to the SPX29150 data sheet. For a 3A version, refer to the SPX29300 datasheet.

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

SPX29502

V

OUT

V

IN

GND

ADJ

1

2

3

4

5

R1

R2

6.8µF

+

+

22µF

SPX29500

V

OUT

V

IN

6.8µF

+

+

22µF

1

2

3

TYPICAL APPLICATION CIRCUITS

1

2

3

SPX29502

5 Pin TO-263

Now Available in Lead Free Packaging

Exar Corporation

www.exar.com

48720 Kato Road, Fremont CA 94538, USA

Tel. +1 510 668-7000 – Fax. +1 510 668-7001

SPX29501/02

5

November 2008

Rev. B