View l7912 datasheet:

L7900AC SERIES ? 2% NEGATIVE VOLTAGE REGULATORS OUTPUT CURRENT UP TO 1.5 A OUTPUT VOLTAGESOF -5; -5.2; -6; -8; -12; -15; -18; -20; -22; -24V THERMAL OVERLOAD PROTECTION SHORT CIRCUIT PROTECTION OUTPUT TRANSITION SOA PROTECTION DESCRIPTION 3 The L7900AC series of three-terminal negative 1 regulators is available in TO-220 and D2PAK packages and several fixed output voltages. These regulators can provide local on-card D2PAK regulation, eliminating the distribution problems associated with single point regulation; furthermore, having the same voltage option as the L7800A positive standard series, they are particularly suited for split power supplies. In addition, the -5.2V is also available for ECL system. If adequate heat sinking is provided, they can deliver o