®
P
5
A
SPX29501/02
Rev.
B
5A Low Dropout Voltage Regulator
November 2008
FEATURES
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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
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
SPX29502
5 Pin TO-263
SP29500
3 Pin TO-220
1
2
3
1
2
3
APPLICATIONS
INPUT
OUTPUT
ADJUST
GND
EN
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
1
SPX29502
+
2
GND
3
5
ADJ
4
+
R1
V
IN
6.8µF
+
1
SPX29500
3
2
+
22µF
V
OUT
V
IN
6.8µF
V
OUT
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