Description-
LM317 is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5Amps over an output-voltage range of 1.25 V to 37 V. It is easy to use and requires only two external resistors to set the output voltage. Both line and load regulation are better than standard fixed regulators.
 
Specifications-
-Input Voltage : Upto 40V
-Output Voltage Range - 1.25V to 37V  
-Output Current : Greater Than 1.5 A
-Operating virtual junction temperature : 150 °C
-Storage Temperature Range :  - 65°C to +175°C
-Lead Temperature:  260°C
-Internal Short-Circuit Current Limiting 
-Thermal Overload Protection
-Output Safe-Area Compensation
 
Applications / Suggested Uses -
Voltage Regulation Circuits.
Constant Current Circuits
Variable Voltage Power Supplies
 
Tips-
1. Always use with a heatsink to help dissipate heat efficiently.