LM7912 Negative Voltage Regulator

The LM7912 (3-terminal regulators) is available with fixed output voltage of -12V. The LM79XX series is packaged in the TO-220 power package and is capable of supplying 1A 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 LM7912 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.