The LM317 device is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5A over an output-voltage range of 1.25V to 37 V.  It requires only two external resistors to set the output voltage.

TECHNICAL DETAILS
Package / Case: TO-220
RoHS: Yes
Output Voltage (VDC): 1.25~37 Positive
Max Input Voltage (VDC): 40
Max Current (A): 1.5
Operating temperature: -5C° ~+150C°