ST 100mA Fixed Voltage Regulators – 78L/79L Series – ST L78L05ACZ, A 3-terminal positive voltage regulator with a 5V output voltage from the L78Lxx series. The regulator employs internal current limiting and thermal shutdown, making it essentially indestructible. Intended as fixed voltage regulators in a wide range of applications including local or on card regulation for elimination of noise and distribution problems associated with single-point regulation. ST L78l05ACZ 0.1A +5V Voltage Regulator