7912 pdf datasheet (3-Terminal

The 7912 series of 3-terminal regulators is available with
fixed output voltages of −5V, −12V, and −15V. These devices
need only one external component—a compensation capacitor
at the output. The 7912 series is packaged in the
TO-220 power package and is capable of supplying 1.5A of
output current.
These regulators employ internal current limiting safe area
protection and thermal shutdown for protection against virtually
all overload conditions.
Low ground pin current of the 7912 series allows output
voltage to be easily boosted above the preset value with a
resistor divider. The low quiescent current drain of these
devices with a specified maximum change with line and load
ensures good regulation in the voltage boosted mode.
For applications requiring other voltages, see LM137
datasheet.