LM2930

3-Terminal Positive Regulator

General Description

The LM2930 3-terminal positive regulator features an ability

to source 150 mA of output current with an input-output dif-

ferential of 0.6V or less. Efficient use of low input voltages

obtained, for example, from an automotive battery during

cold crank conditions, allows 5V circuitry to be properly pow-

ered with supply voltages as low as 5.6V. Familiar regulator

features such as current limit and thermal overload protec-

tion are also provided.

Designed originally for automotive applications, the LM2930

and all regulated circuitry are protected from reverse battery

installations or 2 battery jumps. During line transients, such

as a load dump (40V) when the input voltage to the regulator

can momentarily exceed the specified maximum operating

voltage, the regulator will automatically shut down to protect

both internal circuits and the load. The LM2930 cannot be

harmed by temporary mirror-image insertion.

Fixed outputs of 5V and 8V are available in the plastic

TO-220 and TO-263 power packages.

Features

n

Input-output differential less than 0.6V

n

Output current in excess of 150 mA

n

Reverse battery protection

n

40V load dump protection

n

Internal short circuit current limit

n

Internal thermal overload protection

n

Mirror-image insertion protection

n

P

Voltage Range

LM2930T-5.0:

5V

LM2930T-8.0:

8V

LM2930S-5.0:

5V

LM2930S-8.0:

8V

Connection Diagrams

(TO-220)

Plastic Package

DS005539-1

Front View

Order Number LM2930T-5.0 or LM2930T-8.0

See NS Package Number T03B

(TO-263)

Plastic Surface-Mount Package

DS005539-7

Top View

DS005539-8

Side View

Order Number LM2930S-5.0 or LM2930S-8.0

See NS Package Number TS3B

April 1998

© 1998 National Semiconductor Corporation

DS005539

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