LM317 is an adjustable 3-terminal positive voltage regulator designed to supply more than 1.5A of load current with an output voltage adjustable over a range of 1.2V to 37V.
The LM317 is a monolithic 3‑terminal positive adjustable voltage regulator capable of delivering over 1.5 A of load current. It features internal current limiting, thermal overload protection, and safe‑area compensation, making it suitable for a wide range of power supply designs.
The datasheet lists absolute maximum ratings, electrical characteristics, typical performance curves, and mechanical dimensions for the TO‑220 and D2‑PAK packages. It also includes ordering codes, connection diagrams, and a brief life‑support policy disclaimer.
| Maximum Output Current | 1.54 A |
|---|---|
| Adjustable Output Voltage Range | 1.2 V to 37 V |
| Package Types | TO‑220, D2‑PAK |
| Input‑Output Voltage Differential | 40 V |
| Maximum Power Dissipation | 20 W |
The LM317 can supply up to 1.54 A of load current.
The output voltage can be adjusted between 1.2 V and 37 V.
The device is offered in TO‑220 and D2‑PAK packages.
The maximum differential is 40 V.