The L7800 series is a three-terminal positive regulator with several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.
The L7800 series are three‑terminal positive voltage regulators offered in TO‑220, TO‑220FP, TO‑220FM, TO‑3 and DPAK packages. They deliver fixed output voltages ranging from 5 V to 24 V and can supply up to 1.5 A when adequate heat sinking is provided. Internal current limiting, thermal shutdown and safe‑area protection make the devices highly robust.
The document lists absolute maximum ratings, thermal data, order codes, connection diagrams and detailed electrical characteristics for each fixed‑output version (L7805, L7806, L7808, L7812, L7815, L7818, L7820, etc.). Revision history and legal disclaimer are included at the end.
| Maximum Output Current | 1.5 A |
|---|---|
| Available Output Voltages | 5 V, 5.2 V, 6 V, 8 V, 8.5 V, 9 V, 10 V, 12 V, 15 V, 18 V, 24 V |
| Protection Features | Thermal overload, short‑circuit, output transition SOA protection |
| Storage Temperature Range | -65 °C to 150 °C |
The L7800 series can deliver up to 1.5 A of output current when proper heat sinking is used.
They provide thermal overload protection, short‑circuit protection, and output transition safe‑area (SOA) protection.
For output voltages of 5 V to 18 V the input voltage may be up to 35 V, and for 20 V or 24 V outputs the limit is 40 V.