BUY LM2576HVT-ADJ https://www.utsource.net/itm/p/1103557.html
SIMPLE SWITCHER 3A Step-Down Voltage Regulator
Description: The LM2576HVT-ADJ is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. Features: Wide 4.5V to 40V input voltage range Output voltage adjustable from 1.23V to 37V Output current of 3A Internal frequency compensation Internal short-circuit current limit Internal thermal shutdown Low quiescent current Low profile TO-220 package Applications: Battery-powered systems Automotive systems Industrial systems Telecom systems Portable systems High-efficiency DC/DC converters (For reference only)