The MC78M00/MC78M00A series is a positive voltage regulator that is identical to the MC7800 series devices, except that it has half the output current. It is designed for local, on-card voltage regulation. It features internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor, making it rugged under most operating conditions. The maximum output current is 500mA.
The MC78M00/MC78M00A series are three‑terminal positive voltage regulators intended for local, on‑card regulation. They provide up to 500 mA of output current and include internal current limiting, thermal shutdown, and safe‑area compensation for rugged operation.
The datasheet lists electrical characteristics for a range of output voltages (5 V to 24 V), maximum ratings such as input voltage 5‑18 V, dropout voltage around 2 V, and package options including TO‑220 and DPAK‑3. Package dimensions and thermal resistance data are also provided for proper heat‑sink design.
| Maximum Output Current | 500 mA |
|---|---|
| Input Voltage Range | 5.0 V‑18 V |
| Thermal Resistance, Junction‑to‑Case | 5.0 °C/W |
| Dropout Voltage | ≈2.0 V |
| Short‑Circuit Current Limit | 50 mA |
| Peak Output Current | 700 mA |
The series can deliver up to 500 mA of output current when adequately heatsinked.
The dropout voltage is about 2.0 V.
The devices operate with an input voltage from 5.0 V to 18 V.