Bay Linear, Inc

2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556

www.baylinear.com

100mA Low Dropout Voltage Regulator

LM2931

Pin Connection

Ordering Information

8SOIC (M)

Package

Tolerance

SOT-89

LM2931R-XX

TO-92

LM2931Z-XX

8-SOIC

LM2931M-XX

“XX” Voltage Selection Guide

Vout

XX Code

3.3V

33

5.0V

50

8.0V

80

8.5V

85

9.0V

90

10.0V

10

12.0V

12

15.0V

15

Adjustable

Left Blank

Description

The Bay Linear LM2931 are low power voltage regulators

designed for a wide range of applications.

They are an

excellent choice for use in Battery Powered applications. The

LM2931 feature low quiescent current (100

µA Typ.) and low

dropout of only 60mV at light loads and 300mV (typ.) at

100mA. The LM2931 has tight initial tolerance of 0.5% typ.,

extremely good load and line regulation of 0.05% typ. and very

low output temperature coefficient.

The Bay Linear LM2931

is available as a

fixed voltage

regulator and as an adjustable regulator in TO-92 and 8SOIC

packages. The Bay Linear LM2931 in an 8SOIC package has

an adjustable output voltage from 3V to 24V, programmed

with a pair of external resistor. The logic compatible shutdown

enables the regulator to be switched ON and OFF.

Features

Regulation

Applications

•

Battery Powered Systems

•

Portable instrumentation

•

Notebooks Computers

•

Potable Consumer Equipment

•

Automotive electronics

•

SMPS Post-Regulator

Bay Linear

Bay Linear

Bay Linear

Bay Linear

Linear Excellence

1

2

4

3

5

6

7

8

Output

Input

GND

GND

GND

GND

Feedback

Shutdown

SOT-89

Front View

INPUT

GND

OUTPUT

BAY

LM2931

OUTPUT

GROUND

INPUT

13

2

TO-92

Bottom View

SOT-89

Front View

INPUT

GND

OUTPUT

BAY

LM2931

SOT-89

Front View

INPUT

GND

OUTPUT

BAY

LM2931

OUTPUT

GROUND

INPUT

13

2

TO-92

Bottom View

OUTPUT

GROUND

INPUT

13

2

TO-92

Bottom View