The L7800A series of three-terminal positive regulators is available in TO-220, TO-220FP, TO-220FM and D2PAK packages and several fixed output voltages, making it useful in a wide range of applications.
The L7800AB/AC series are three‑terminal positive linear regulators offered in TO‑220, TO‑220FP, TO‑220FM and DPAK packages. They deliver up to 1 A output current with internal current limiting, thermal shutdown and safe‑area protection, making them suitable for a wide range of applications that require stable voltages.
The datasheet lists absolute maximum ratings, thermal data, electrical characteristics for each fixed‑voltage version, ordering codes, mechanical dimensions and protection features. Detailed specifications such as output voltage tolerance, dropout voltage, short‑circuit current and supply‑voltage rejection are provided for designers.
| Maximum Input Voltage | 35 V (5‑18 V output) / 40 V (20‑24 V output) |
|---|---|
| Output Current | Internally limited |
| Power Dissipation | Internally limited |
| Storage Temperature Range | -65 °C to +150 °C |
| Operating Junction Temperature Range | 0 °C to +150 °C (L7800AC) / -40 °C to +125 °C (L7800AB) |
| Dropout Voltage (1 A load) | 2 V |
| Short‑Circuit Current | 0.2 A at 35 V |
| Supply Voltage Rejection (120 Hz) | 68 dB (8‑18 V input) |
The series can tolerate up to 35 V for output voltages 5‑18 V and up to 40 V for 20‑24 V output versions.
They are rated for storage from –65 °C to +150 °C.
They provide thermal overload protection, output transition SOA protection, and internal current limiting.
The regulators are offered in TO‑220, TO‑220FP, TO‑220FM and DPAK packages.