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The STMicroelectronics LM317T is a versatile adjustable positive voltage regulator designed for a wide range of applications. It can supply currents in excess of 1.5A over an output voltage range of 1.2V to 37V.
This regulator is easy to use, requiring only two external resistors to set the output voltage. It incorporates internal current limiting, thermal shutdown, and safe area compensation, making it highly reliable and essentially blow-out proof. The device is suitable for local, on-card regulation and can also be configured as a programmable output regulator or a precision current regulator.
Key electrical specifications include an adjustable output voltage from 1.2V to 37V, a maximum input voltage of 40V, and an output current capability of 1.5A. It operates within a temperature range of 0°C to 125°C and features protection against over current, over temperature, and short circuits. The PSRR is rated between 65dB and 80dB at 120Hz.
The LM317T is available in a through-hole TO-220-3 package, making it suitable for standard PCB mounting. Its robust design and adjustable output make it a flexible choice for power supply designs.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.28 | $0.28 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The LM317T provides an adjustable output voltage from 1.2V to 37V.
The LM317T is available in a TO-220-3 package with through-hole mounting.
The LM317T operates from 0°C to 125°C.
The LM317T can deliver up to 1.5A output current.
The LM317T includes over current, over temperature, and short circuit protection.
The LM317T has a PSRR of 65 dB to 80 dB at 120 Hz.