The LM1085IS-12/NOPB is a low dropout Positive Regulator with a maximum dropout of 12V at 3A of load current. It has the same pin-out as TI's industry standard LM317. Two resistors are required to set the output voltage of the adjustable output voltage version of the regulator. Fixed output voltage of 12V version integrate the adjust resistors. The LM1085 circuit includes a Zener trimmed band gap reference, current limiting and thermal shutdown.