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LM78LXX Series 3-Terminal Positive Regulators
January 2000
LM78LXX Series
3-Terminal Positive Regulators
General Description tection for the output transistors is provided to limit internal
power dissipation. If internal power dissipation becomes too
The LM78LXX series of three terminal positive regulators is high for the heat sinking provided, the thermal shutdown cir-
available with several fixed output voltages making them cuit takes over preventing the IC from overheating.
useful in a wide range of applications. When used as a zener
diode/resistor combination replacement, the LM78LXX usu-
ally results in an effective output impedance improvement of Features
two orders of magnitude, and lower quiescent current. These n LM78L05 in micro SMD package
regulators can provide local on card regulation, eliminating n Output voltage tolerances of