The LM317 device is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V. It requires only two external resistors to set the output voltage. The device features a typical line regulation of 0.01% and typical load regulation of 0.1%. It includes current limiting, thermal overload protection, and safe operating area protection. Overload protection remains functional even if the ADJUST terminal is disconnected.
| Output options |
| Iout (Max) (A) |
| Vin (Max) (V) |
| Vin (Min) (V) |
| Vout (Max) (V) |
| Vout (Min) (V) |
| Package Group |
| Features |
| Regulated outputs (#) |
| Operating temperature range (C) |
| Thermal Resistance θJA (°C/W) |
| Noise (uVrms) |
| Approx. price (US$) |
| Rating |
| Output capacitor type |
| PSRR @ 100 KHz (dB) |
| Accuracy (%) |
| Vdo (Typ) (mV) |
| Iq (Typ) (mA) |
| Package size: mm2:W x L (PKG) |
| LM317 | LM317L | LM317M |
|---|---|---|
| Adjustable Output | Adjustable Output | Adjustable Output |
| 1.5 | 0.1 | 0.5 |
| 40 | 35 | 40 |
| 3 | 5 | 3 |
| 37 | 32 | 37 |
| 1.25 | 1.2 | 1.2 |
|
DDPAK/TO-263 | 3
SOT-223 | 4 TO-220 | 3 |
SOIC | 8
SOT-89 | 3 TO-92 | 3 TSSOP | 8 |
SOT-223 | 4
TO-252 | 3 |
|
|
|
|
| 1 | 1 | 1 |
| 0 to 125 |
-40 to 125 0 to 125 |
-40 to 125 |
| 24 | 52 | 60 |
| 38 | 30 | 38 |
| 0.18 | 1ku | 0.09 | 1ku | 0.26 | 1ku |
| Catalog | Catalog | Catalog |
| Non-Ceramic |
Cap Free Non-Ceramic |
Cap Free Non-Ceramic |
| 38 | 38 | 22 |
| 5 | 3 | 3 |
| 2000 | 2000 | 2000 |
| 3.5 | 1.5 | 3.5 |
|
3DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 3)
4SOT-223: 46 mm2: 7 x 6.5 (SOT-223 | 4) See datasheet (TO-220) |
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
3SOT-89: 18 mm2: 4.095 x 4.5 (SOT-89 | 3) 3TO-92: 19 mm2: 3.68 x 5.2 (TO-92 | 3) 8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8) |
4SOT-223: 46 mm2: 7 x 6.5 (SOT-223 | 4)
3TO-252: 67 mm2: 10.11 x 6.6 (TO-252 | 3) |
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