The LM2576R-3.3 is a DC-DC converter step-down adjustable (fixed) 1 40V 1.23V 37V 3A TO-263-5 RoHS manufactured by HTC Korea. This device offers an input voltage range from 1 to 40V, an output voltage from 1.23V up to 37V, and a maximum output current of 3A. It is a highly efficient, high power density, easy-to-use, low dropout voltage regulator designed for use as a point of load (POL) regulator with a wide input voltage range, low ripple, and high efficiency. It is integrated with adjustable frequency oscillator which allows for easy adjustment of the output voltage level via external resistors. The device is available in surface mount device and through-hole package options. The package is RoHS compliant, lead-free and Halogen-free.