Date: Sept 28-06 Rev E

SPX294 A Low Dropout Linear Regulator

© 2006 Sipex Corporation

SPX2941

Solved by

TM

1A Low Dropout Voltage Regulator

DESCRIPTION

FEATURES

■

Adjustable Output Down To 1.25V

■

Low Quiescent Current

■

Guaranteed 1.5A Peak Output Current

■

Low Dropout Voltage of 280mV @ 1A

■

Extremely Tight Load and Line

Regulation

■

Extremely Fast Transient Response

■

Reverse-battery Protection

■

Internal Thermal and Current Limit

Protection

■

Zero Current Shutdown

■

Standard TO-220 and TO-263

packages

Figure 1. Adjustable Output Linear Regulator

The SPX2941 is a 1A, accurate voltage regulator with a low drop out voltage of 280mV(typ.) at

1A. 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. The SPX2941 is offered in 5-pin

TO-220 & TO-263 packages. For a 3A version, refer to the SPX29300 data sheet.

SPX2941

V

OUT

V

IN

GND

ADJ

4

2

3

5

1

R1

R2

10 F

6.8 F

+

+

EN

TYPICAL APPLICATIONS CIRCUIT

Now Available in Lead Free Packaging

APPLICATIONS

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Powering VGA & Sound Card

■

LCD Monitors

■

USB Power Supply

■

Power PC Supplies

■

SMPS Post-Regulator

■

High Efficiency Linear Power Supplies

■

Battery Charger

■

Portable Instrumentation

■

Constant Current Regulators

■

Adjustable Power Supplies

1 2 3 4 5

SPX2941

5 Pin TO-263

Adjustable Output, Fast Response