This part is a kind of semiconductor called LM317L.

Function of this product has 3-Terminal Adjustable Regulator.

Manufacturers : National Semiconductor

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LM317L 3-Terminal Adjustable Regulator March 2000 LM317L 3-Terminal Adjustable Regulator General Description The LM317L is an adjustable 3-terminal positive voltage regulator capable of supplying 100mA over a 1.2V to 37V output range. It is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. Also, the LM317L is available packaged in a standard TO-92 transistor package which is easy to use. In addition to higher performance than fixed regulators, the LM317L offers full overload protection. Included on the chip are current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment term [ ... ]

LM317L PDF Datasheet Download