The L78xx series of three-terminal positive regulators is available in TO-220, TO-220FP, TO-3 and D2PAK packages and several fixed output voltages, making it useful in a wide range of applications.
The L78xx series are three‑terminal positive voltage regulators offered in TO‑220, TO‑220FP, TO‑3 and DPAK packages. They provide fixed output voltages ranging from 5 V to 24 V and can deliver up to 1.5 A with appropriate heat sinking. Internal current limiting, thermal shutdown and safe‑area protection make the devices robust for a wide variety of applications.
The document includes pin‑out diagrams, maximum rating tables, electrical characteristics, typical performance curves, mechanical data for each package, order codes and revision history. It is intended for designers who need detailed specifications and reference circuits for integrating the L78xx regulators into their designs.
| Maximum output current | 1.5 A |
|---|---|
| Available fixed output voltages | 5 V, 5.2 V, 6 V, 8 V, 8.5 V, 9 V, 10 V, 12 V, 15 V, 18 V, 20 V, 24 V |
| Storage temperature range | -65 °C to 150 °C |
| Operating junction temperature range | 0 °C to 150 °C |
| Thermal resistance (junction‑ambient) | 62.5 °C/W (DPAK), 50 °C/W (TO‑220), 60 °C/W (TO‑220FP), 35 °C/W (TO‑3) |
The regulators can deliver up to 1.5 A when adequate heat sinking is provided.