BUY PD64004AH https://www.utsource.net/itm/p/5002694.html
4-PORT HPoE PSE MANAGER
Description: The PD64004AH is a low-voltage, low-power, high-efficiency, synchronous buck regulator with integrated power MOSFETs from Microsemi. It is designed to provide a regulated output voltage from an input voltage of 2.5V to 5.5V. Features: Output voltage range: 0.8V to 4.5V Output current up to 4A High efficiency up to 95% Low quiescent current Programmable switching frequency up to 2MHz Internal compensation Internal soft-start Over-current protection Over-temperature protection Short-circuit protection Enable/disable control Small QFN-48 package Applications: Portable consumer electronics Battery-powered applications Industrial and automotive applications Point-of-load (POL) regulation (For reference only)