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The LM217, LM317 are monolithic integrated circuits in TO-220, TO-220FP and D²PAK packages intended for use as positive adjustable voltage regulators.
They are designed to supply more than 1.5 A of load current with an output voltage adjustable over a 1.2 to 37 V range.
The nominal output voltage is selected by means of a resistive divider, making the device exceptionally easy to use and eliminating the stocking of many fixed regulators.Key Features
- Output voltage range: 1.2 to 37 V
- Output current in excess of 1.5 A
- 0.1% line and load regulation
- Floating operation for high voltages
- Complete series of protections: current limiting, thermal shutdown and SOA control
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| LM317BT |
Active
|
TO-220 | Industrial | Ecopack2 | |
| LM317D2T-TR |
Active
|
D2PAK | Industrial | Ecopack2 | |
| LM317P |
Active
|
TO-220FP | Industrial | Ecopack2 | |
| LM317T |
Active
|
TO-220 | Industrial | Ecopack2 | |
| LM317T-DG |
Active
|
TO-220 | Industrial | Ecopack1 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| LM317D2T-TR | 10 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | D2PAK | 0 | 125 | CHINA | 0.32 / 1k | |
| LM317BT | 5 distributors | Buy now |
Active
|
EAR99 | NEC | Tube | TO-220 | -40 | 125 | CHINA | 0.23 / 1k | |
| LM317T-DG | 11 distributors | Buy now |
Active
|
EAR99 | NEC | Tube | TO-220 | 0 | 125 | CHINA | 0.192 / 1k | |
| LM317T | 12 distributors | Buy now |
Active
|
EAR99 | NEC | Tube | TO-220 | 0 | 125 | CHINA | 0.144 / 1k | |
| LM317P | 8 distributors |
Active
|
EAR99 | NEC | Tube | TO-220FP | 0 | 125 | CHINA | 0.306 / 1k | ||
Marketing Status
ActiveECCN (US)
EAR99Budgetary Price (US$)*/Qty
0.306 / 1k(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors