Bay Linear
Linear Excellence
100mA Low Dropout Voltage Regulator
LM2931
Description
Features
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Guaranteed 100mA Output
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.
Fixed Versions 3.3V, 50.V, 8.0
Very Low Quiescent Current
Low Dropout Voltage
Extremely Tight Load and Line
Regulation
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Very Low Temperature Coefficient
Current and Thermal Limiting
Reverse Battery Protection of –20V
Transient protection of 60V
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.
Output programmable from 3V to 24V
Applications
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Battery Powered Systems
Portable instrumentation
Notebooks Computers
Potable Consumer Equipment
Automotive electronics
SMPS Post-Regulator
Pin Connection
Ordering Information
TO-92
SOT-89
Package
SOT-89
TO-92
Tolerance
LM2931R-XX
LM2931Z-XX
LM2931M-XX
2
1
3
BAY
LM2931
8-SOIC
OUTPUT
INPUT
GND
INPUT
OUTPUT
GROUND
“XX” Voltage Selection Guide
Front View
Bottom View
Vout
3.3V
XX Code
33
8SOIC (M)
50
80
85
90
10
12
15
5.0V
8.0V
8.5V
9.0V
10.0V
12.0V
15.0V
Adjustable
8
7
6
5
Input
Output
GND
1
2
3
4
GND
GND
GND
Feedback
Shutdown
Left Blank
Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556
www.baylinear.com