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LM317T 1.5A 3 Terminal Adjustable Voltage Regulator TO220 Style Case

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Quoting product code: UF27E


About this product


  • Output adjustable between 1.25V and 37V
  • Internal thermal overload protection
  • Internal short circuit current limiting constant with temperature

Product overview

• Output adjustable between 1.25V and 37V• Internal thermal overload protection• Internal short circuit current limiting constant with temperature• Output transistor safe-area compensation• Floating operation for high voltage applications• Eliminates using many fixed voltages• Output voltage with 4% tolerance

The LM317 is an adjustable, positive, 3-terminal voltage regulator capable of supplying 1.5A (Order Code UF27E) over an output voltage range of 1.2V to 37V. This voltage regulator is exceptionally easy to use and requires only 2 external reistors to set the output voltage. Both line and load regulation are better than standard fixed regulators. Full overload protection is included on-chip with current limiting, thermal and safe area protection. This remains fully functional even if the adjustment terminal is disconnected, making it essentially blow-out proof.UF27E is supplied in a TO-220 style case.


Output voltage: 1.2V to 37V
Input/output differential voltage: 40V max.
Operating junction temperature: -20°C to +125°C
Line regulation: 0.01%/V
Load regulation: 0.1%
Adjustment pin current: 50µA
Reference voltage: 1.25V typical
Output noise: 0.003% of Vout
Ripple rejection ratio: 65dB