The LM317LD13TR is a three Terminal Adjustable Regulator from STMicroelectronics. This device is designed to provide a regulated DC output voltage from an unregulated DC input voltage in a very small footprint. It features an adjustable output voltage operating range from 1.2V to 37V, with a maximum output current of 1.3A. The industry-standard pin-out makes the device highly interchangeable and allows for direct connections to popular 3-pin SOT-223 and TO-220 packages. It comes in RoHS-compliant, lead-free packages and is AEC-Q100 certified. The device also features a low current consumption, high-output current, low dropout voltage, good power supply rejection, and is especially useful for powering loads from switching power supply.