The National Semiconductor datasheet provides specifications, ratings, and application notes for the LM117, LM317A, and LM317 adjustable 3‑terminal voltage…
The LM117 series of adjustable 3‑terminal positive voltage regulators delivers up to 1.5 A over a 1.2 V to 37 V output range. They require only two external resistors to set the output voltage and include internal current‑limit, thermal‑overload, and safe‑area protection.
The document details absolute maximum ratings, electrical characteristics, typical performance data, application hints (including bypass capacitor recommendations and heatsinking), and physical dimensions for multiple package styles such as TO‑3, TO‑220, TO‑263, SOT‑223, and TO‑252.
| Output voltage range | 1.2 V – 37 V |
|---|---|
| Line regulation | 0.01 %/V |
| Load regulation | 0.3 % |
The LM117 series can deliver up to 1.5 A of output current.
No output capacitors are needed unless the device is more than 6 inches from the input filter capacitors, in which case an input bypass capacitor is recommended.