LM2931 Series
Low Dropout
Voltage Regulators
The LM2931 series consists of positive fixed and adjustable output
voltage regulators that are specifically designed to maintain proper
regulation with an extremely low input鈥搕o鈥搊utput voltage differential.
These devices are capable of supplying output currents in excess of
100 mA and feature a low bias current of 0.4 mA at 10 mA output.
Designed primarily to survive in the harsh automotive environment,
these devices will protect all external load circuitry from input fault
conditions caused by reverse battery connection, two battery jump
starts, and excessive line transients during load dump. This series also
includes internal current limiting, thermal shutdown, and additionally,
is able to withstand temporary power鈥搖p with mirror鈥搃mage insertion.
Due to the low dropout voltage and bias current specifications, the
LM2931 series is ideally suited for battery powered industrial and
consumer equipment where an extension of useful battery life is
desirable. The 鈥楥鈥?suffix adjustable output regulators feature an output
inhibit pin which is extremely useful in microprocessor鈥揵ased
systems.
鈥?/div>
Input鈥搕o鈥揙utput Voltage Differential of < 0.6 V @ 100 mA
鈥?/div>
Output Current in Excess of 100 mA
鈥?/div>
Low Bias Current
鈥?/div>
60 V Load Dump Protection
鈥?/div>
鈥?0 V Reverse Transient Protection
鈥?/div>
Internal Current Limiting with Thermal Shutdown
鈥?/div>
Temporary Mirror鈥揑mage Protection
鈥?/div>
Ideally Suited for Battery Powered Equipment
鈥?/div>
Economical 5鈥揕ead TO鈥?20 Package with Two Optional Leadforms
鈥?/div>
Available in Surface Mount SOP鈥?, D
2
PAK and DPAK Packages
鈥?/div>
High Accuracy (
鹵
2%) Reference (LM2931AC) Available
http://onsemi.com
FIXED OUTPUT VOLTAGE
TO鈥?2
Z SUFFIX
CASE 29
Pin 1. Output
2. Ground
3. Input
1
2
3
TO鈥?20
T SUFFIX
CASE 221A
DPAK
DT SUFFIX
CASE 369A
D
2
PAK
D2T SUFFIX
CASE 936
1
2
3
1
Pin 1. Input
2. Ground
3. Output
3
1
3
ADJUSTABLE OUTPUT VOLTAGE
TO鈥?20
TH SUFFIX
CASE 314A
1
5
TO鈥?20
1
TV SUFFIX
CASE 314B
5
TO鈥?20
T SUFFIX
CASE 314D
1
5
Pin 1. Adjust
2. Output
Inhibit
3. Ground
4. Input
5. Output
SOIC鈥?
D SUFFIX
CASE 751
FIXED
N.C.
Gnd
Input
8
1
(Top View)
5
4
N.C.
Gnd
Output
D
2
PAK
D2T SUFFIX
1
CASE 936A
8
1
5
ADJUSTABLE
Output
Inhibit
Gnd
Input
8
1
(Top View)
5
4
Adjust
Gnd
Output
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
DEVICE MARKING INFORMATION
See general marking and heatsink information in the device
marking section on page 13 of this data sheet.
漏
Semiconductor Components Industries, LLC, 2000
1
September, 2000 鈥?Rev. 5
Publication Order Number:
LM2931/D
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