Texas Instruments LM78L12ACZ

3-TERMINAL POSITIVE REGULATOR Fixed Positive Standard Regulator, 12VBIPolar, PBCY3

IC, V REG +12V, 78L12, TO-92-3; Primary Input Voltage:19V; Output Voltage Fixed:12V; Dropout Voltage Vdo:1.7V; No. of Outputs:1; No. of Pins:3; Output Current:100mA; Voltage Regulator Case Style:TO-92; Operating Temperature Range:0°C to +125°C; SVHC:No SVHC (19-Dec-2011); Accuracy %:5%; Base Number:78; Device Marking:LM78L12ACZ; IC Generic Number:78L12; IC Package (Case style):TO-92; Input Voltage Max:35V; Input Voltage Min:13.7V; Logic Function Number:78; Operating Temperature Max:125°C; Operating Temperature Min:0°C; Operating Voltage Tolerance +:5%; Output Current Max:0.1A; Output Voltage:12V; Output Voltage Max:12V; Package / Case:TO-92; Supply Voltage Max:27V; Supply Voltage Min:14.5V; Termination Type:Through Hole; Voltage:12V; Voltage Regulator Type:Positive Fixed

The LM78LXX series of three terminal positive regulators is available with several fixed output voltages making them useful in a wide range of applications. When used as a zener diode/resistor combination replacement, the LM78LXX usually results in an effective output impedance improvement of two orders of magnitude, and lower quiescent current. These regulators can provide local on card regulation, eliminating the distribution problems associated with single point regulation. The voltages available allow the LM78LXX to be used in logic systems, instrumentation, HiFi, and other solid state electronic equipment. The LM78LXX is available in the plastic TO-92 (Z) package, the plastic SO-8 (M) package and a chip sized package (8-Bump micro SMD) using National's micro SMD package technology. With adequate heat sinking the regulator can deliver 100mA output current. Current limiting is included to limit the peak output current to a safe value. Safe area protection for the output transistors is provided to limit internal power dissipation. If internal power dissipation becomes too high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating.