The L7800 series of three-terminal positive regulators are available in TO-220, TO-220FP, TO-220FM, TO-3 and D2PAK packages and 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 provide fixed output voltages from 5 V up to 24 V and can deliver up to 1.5 A with internal current limiting, thermal shutdown and safe‑area protection.
The document includes absolute maximum ratings, thermal data, connection diagrams, order codes, application circuits and detailed electrical characteristics for each part number, as well as revision history and legal disclaimer information.
| Maximum output current | 1.5 A |
|---|---|
| Input voltage range (L7805) | up to 35 V |
| Dropout voltage at 1 A load (L7805) | 2.5 V |
| Short‑circuit current | 0.75 A to 1.2 A |
The L7805 can tolerate an input voltage up to 35 V.
The series includes thermal overload protection, short‑circuit protection, output transition SOA protection and internal current limiting.
The dropout voltage is about 2.5 V when the regulator supplies 1 A.