BUY LM25005MH https://www.utsource.net/itm/p/4721638.html
42V, 2.5A STEP-DOWN SWITCHING REGULATOR
Description: Step-Down DC-DC Converter Features: -Input voltage range: 4.5V to 36V -Output voltage range: 0.8V to 28V -High efficiency: up to 94% -Low quiescent current: <1.5 mA -Integrated power MOSFETs -Programmable switching frequency -Programmable soft-start -Thermal shutdown protection -Over-current protection -Under-voltage lockout Applications: -Automotive -Industrial -Consumer -Portable electronics -Medical (For reference only)