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Date: 5/25/04

SPX2940 1A Low Dropout Voltage Regulator

© Copyright 2004 Sipex Corporation

1A Low Dropout Voltage Regulator

Fixed Output, Fast Response

SPX2940

DESCRIPTION

FEATURES

■ Guaranted 1.5A Peak Current

■ Low Quiescent Current

■ Low Dropout Voltage of 280mV at 1A

■ Extremely Tight Load and Line Regulation

■ Extremely Fast Transient Response

■ Reverse-battery Protection

■ Internal Thermal Protection

■ Internal Short Circuit Current Limit

■ Replacement for LM2940, MIC2940A,

AS2940

■ Standard TO-220 and TO-263 packages

®

The SPX2940 is a 1A, accurate voltage regulators with a low drop out voltage of 280mV (typical)

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 SPX2940 is offered in 3-pin TO-220 & TO-263 packages. For a 3A version, refer to the

SPX29300 data sheet.

SPX2940

V

OUT

V

IN

+

6.8µF

+

10µF

1

2

3

Figure 1. Fixed Output Linear Regulator.

TYPICAL APPLICATIONS CIRCUIT

APPLICATIONS

■ Powering VGA & Sound Card

■ LCD Monitors

■ USB Power Supply

■ SMPS Post-Regulator

■ PDA or Notebook Computer

■ High Efficiency Linear Power Supplies

■ Portable Instrumentation

■ Constant Current Regulators

■ Cordless Telephones

■ Automotive Electronics

Now Available in Lead Free Packaging

12

3

SPX2940

3 Pin TO-263

GND

V

IN

V

OUT