Rev A 8/5/06

SP2950/5/52/53 .5A Low Dropout voltage Regulator

© Copyright 2006 Sipex Corporation

1.5A Low Dropout Voltage Regulator

SPX29150/51/52/53

DESCRIPTION

FEATURES

■ Adjustable Output Down to 1.25V

■ 1% Output Accuracy

■ Output Current of 1.5A

■ Low Dropout Voltage of 390mV @ 1.5A

■ Extremely Tight Load and Line

Regulation

■ Extremely Fast Transient Response

■ 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

The SPX29150/51/52/53 are 1.5A, highly accurate voltage regulators with a low dropout

voltage of 390mV (typical) @ 1.5A. These regulators are specifically designed for low volt-

age 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 SPX29150/51/52/53 is offered in 3-pin and 5-pin TO-220 & TO-263 packages. For a 3A

version, refer to the SPX29300 data sheet.

APPLICATIONS

■ Powering VGA and Sound Cards

■ LCD Monitors

■ USB Power Supplies

■ PowerPC™ Supplies

■ SMPS Post Regulators

■ High-efficiency “Green” Computer

Systems

■ High-efficiency Linear Power Supplies

■ Portable Instrumentation

■ Constant Current Regulators

■ Adjustable Power Supplies

■ Battery Chargers

Figure 1. Fixed Output Linear Regulator

Figure 2. Adjustable Output Linear Regulator

TYPICAL APPLICATION CIRCUITS

SPX29152

GND

ADJ

1

2

3

4

5

R1

R2

6.8µ F

+

+ 10µ F

SPX29150

6.8µ F

+

+ 10µ F

1

2

3