SPX29501 Просмотр технического описания (PDF) - Exar Corporation

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SPX29501

5A Low Dropout Voltage Regulator

Exar Corporation 

November 2008

®

5

A

P

SPX29501/02

5A Low Dropout Voltage Regulator

Rev. B

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

SPX29502

5 Pin TO-263

1 23

SP29500

3 Pin TO-220

1 23

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

VIN GND VOUT

Now Available in Lead Free Packaging

DESCRIPTION

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.

TYPICAL APPLICATION CIRCUITS

VIN

+

6.8µF

1 SPX29500 3

2

VOUT

+ 22µF

VIN

+

6.8µF

1 SPX29502 4

2

3

GND

5

ADJ

VOUT

R1+ 22µF

R2

Figure 1. Fixed Output Linear Regulator

Exar Corporation

48720 Kato Road, Fremont CA 94538, USA

Figure 2. Adjustable Output Linear Regulator

www.exar.com

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

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