LM78 Datasheet PDF

●The LM78L12ACM is a 3-terminal Positive Regulator, 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 LM78L12ACM usually results in an effective output impedance improvement of two orders of magnitude and lower quiescent current. This regulator can provide local on card regulation, eliminating distribution problems associated with single point regulation. 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.

● Output voltage tolerance of ±5% over-temperature range

● Internal thermal overload protection

● Output transistor safe area protection

● Internal short-circuit current limit

● No external components required

●Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.