The DC-DC μModule Buck Regulator – LTM4653 from Analog Devices is an ultralow noise 58 V, 4 A DC/DC step-down μModule regulator designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components.
It operates over an input voltage range of 3.1 V to 58 V and supports an output voltage range of 0.5 V to 94% of VIN, and a switching frequency range of 250kHz to 3MHz (400kHz default).