The LM317MG-AA3-R Linear Voltage Regulators SOT-223 RoHS manufactured by Unisonic is a three-terminal positive adjustable voltage regulator designed to supply 1.2 to 37V with a current up to 1.5 A. The output voltage can be effectively adjusted with two external resistors, making the device usable in many different applications. The design also includes internal temperature compensation and current limiting, making it very robust and reliable. Unlike some other voltage regulators, the LM317MG-AA3 is designed with RoHS (Restriction of Hazardous Substances) compliance in mind, which makes it a more eco-friendly device.