SPX29501 Datasheet, PDF (1/9 Pages) Exar Corporation – 5A Low Dropout Voltage Regulator

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
V_IN GND V_OUT
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
V_IN
+
6.8µF
1 SPX29500 3
2
V_OUT
+ _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. [phone] – Fax. [phone]