The LM2576R-12 is a DC-DC converter step-down adjustable (fixed) to 40V, 1.23V, 37V, 3A in TO-263-5 RoHS package and is manufactured by HTC Korea. It enables a wide range of input and output voltages. This DC-DC converter contains an internal integrated switching regulator which can convert an input voltage at an adjustable frequency between 50kHz and 100kHz. It has a synchronous rectifier and a pulse width modulation control circuit, as well as thermal and over-current protection, high efficiency and an internal soft-start. The LM2576R-12 is ideal for applications such as telecommunications, data processing, medical technology, portable systems and consumer electronics.