LM79MXX Series 3-Terminal Negative Regulators
September 2001
LM79MXX Series
3-Terminal Negative Regulators
General Description
The LM79MXX series of 3-terminal regulators is available
with fixed output voltages of 鈭?V, 鈭?2V, and 鈭?5V. These
devices need only one external component 鈥?a compensa-
tion capacitor at the output. The LM79MXX series is pack-
aged in the TO-220 power package, and is capable of sup-
plying 0.5A of output current.
These regulators employ internal current limiting, safe area
protection, and thermal shutdown for protection against vir-
tually all overload conditions.
Low ground pin current of the LM79MXX series allows out-
put voltage to be easily boosted above the preset value with
a resistor divider. The low quiescent current of these devices
with a specified maximum change with line and load ensures
good regulation in the voltage boosted mode.
For output voltage other than 鈭?V, 鈭?2V, and 鈭?5V the
LM137 series provides an output voltage range from 鈭?.2V
to 鈭?7V.
Features
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Thermal, short circuit and safe area protection
High ripple rejection
0.5A output current
4% tolerance on preset output voltage
Connection Diagram
TO-220 Plastic Package (T)
DS010483-7
Front View
Order Number LM79M05CT, LM79M12CT or LM79M15CT
See NS Package Number T03B
漏 2001 National Semiconductor Corporation
DS010483
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