The LM78LXX series is a three-terminal positive regulator with several fixed output voltages, making them suitable for a wide range of applications. When used as a zener diode/resistor combination replacement, the LM78LXX usually results in a significant improvement in effective output impedance and lower quiescent current. These regulators can provide on-card regulation, eliminating the distribution problems associated with single point regulation. The available voltages allow the LM78LXX to be used in logic systems, instrumentation, HiFi, and other solid-state electronic equipment. The LM78LXX is available in plastic TO-92 (Z) package, plastic SO-8 (M) package, and a chip-sized package (8-Bump micro SMD) using National's micro SMD package technology. With sufficient heat sinking, the regulator can deliver an output current of 100mA. Current limiting is included to limit the peak output current to a safe value. Safe area protection is provided for the output transistors to limit internal power dissipation. If the internal power dissipation exceeds the heat sinking capability, the thermal shutdown circuit prevents the IC from overheating.
The LM78LXX series are three‑terminal positive linear regulators offered in fixed output voltages such as 5.0 V, 6.2 V, 8.2 V, 9.0 V, 12 V and 15 V. They provide up to 100 mA output current, internal thermal overload protection, and short‑circuit current limiting, making them suitable for logic, instrumentation, Hi‑Fi and other solid‑state applications.
The family is available in three package types – plastic TO‑92 (Z), plastic SO‑8 (M) and an 8‑bump micro‑SMD package – and includes detailed electrical characteristics, absolute maximum ratings, typical performance curves, and ordering information.
| Output voltages | 5.0 V, 6.2 V, 8.2 V, 9.0 V, 12 V, 15 V |
|---|---|
| Maximum output current | 100 mA |
| Package options | TO‑92 (Z), SO‑8 (M), 8‑Bump micro SMD |
| Thermal protection | Internal thermal overload protection and thermal shutdown |
| Output voltage tolerance | +5 % over temperature range |
The series offers fixed output voltages of 5.0 V, 6.2 V, 8.2 V, 9.0 V, 12 V and 15 V.
Each device can deliver up to 100 mA of output current.
They are supplied in plastic TO‑92 (Z), plastic SO‑8 (M) and an 8‑bump micro‑SMD package.
Yes, it features internal thermal overload protection and a thermal shutdown circuit to prevent overheating.