LM2930
3-Terminal Positive Regulator
General Description
Features
The LM2930 3-terminal positive regulator features an ability
to source 150 mA of output current with an input-output
differential 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
powered with supply voltages as low as 5.6V. Familiar regulator features such as current limit and thermal overload
protection 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.
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Input-output differential less than 0.6V
Output current in excess of 150 mA
Reverse battery protection
40V load dump protection
Internal short circuit current limit
Internal thermal overload protection
Mirror-image insertion protection
P+ Product Enhancement tested
Voltage Range
j
LM2930T-5.0:
5V
j
LM2930T-8.0:
8V
j
LM2930S-5.0:
5V
j
LM2930S-8.0:
8V
Connection Diagram
(TO-220)
Plastic Package
00553908
Side View
Order Number LM2930S-5.0 or LM2930S-8.0
See NS Package Number TS3B
00553901
Front View
Order Number LM2930T-5.0 or LM2930T-8.0
See NS Package Number T03B
(TO-263)
Plastic Surface-Mount Package
00553907
Top View
© 2005 National Semiconductor Corporation
DS005539
www.national.com
LM2930 3-Terminal Positive Regulator
June 2005
