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Date: 05/25/04

SPX2931 100mA Low Dropout Voltage Regulator

© Copyright 2004 Sipex Corporation

100mA Low Dropout Voltage Regulator

SPX2931

DESCRIPTION

FEATURES

■ 3.3V and 3.5V Versions

■ Output Current in Excess of 100 mA

■ Input-Output Differential is 0.3 at 100mA

■ Mirror-Image Insertion Protection

■ Internal Thermal Protection

■ Available in TO-92 and SOT-89 Packages

■ Improved Version of the Industry

Standard LM2931

■ Reverse Battery, Internal Short Circuit,

20V Reverse Transient and 60V Load

Dump Protection

■ Availiable with either 2% or 3% Output

Accurancy at 25°C

®

The SPX2931 is a low power, positive voltage regulator. This device is an excellent choice for

use in battery-powered applications such as cordless telephones, radio control systems, and

portable computers. The SPX2931 features offers very low quiescent currents (0.4 mA), and very

low drop output voltage (50 mV at light load and 300 mV at 100 mA). The SPX2931 is offered

in a 3-pin TO-92, and SOT-89 package.

APPLICATIONS

■ Portable Instrumentation

■ Cordless Telephones

■ Radio Control Systems

TYPICAL APPLICATIONS CIRCUIT

Now Available in Lead Free Packaging

SPX2931

V

IN

C

1

V

OUT

1µF

100µF,

ESR 0.05 to 0.6

ohms

Gnd

Bottom View

TO-92 (N)

SOT-89 (M1)

Top View

1

2

3

V

IN

GND

13

2

GND

V

IN

V

OUT