BUY ISL95521AHRZ-T https://www.utsource.net/itm/p/7556126.html
Charger IC Lithium-Ion/Polymer 32-QFN (4x4)
Description: The ISL95521A is a high-efficiency, synchronous buck regulator with integrated high-side and low-side MOSFETs. Features: -Input voltage range: 2.5V to 5.5V -Output voltage range: 0.6V to VIN -High efficiency: up to 95% -Integrated high-side and low-side MOSFETs -Programmable switching frequency: 200kHz to 2MHz -Programmable soft-start -Programmable current limit -Programmable over-temperature protection -Programmable over-voltage protection -Programmable under-voltage lockout -32-VFQFN Exposed Pad package Applications: -Power management in portable applications -Battery-powered systems -Point-of-load (POL) regulation -DC/DC converters -LED drivers -Telecom and networking systems -Industrial and medical systems (For reference only)