BUY SY8089AAAC https://www.utsource.net/itm/p/11247153.html

Description: SY8089AAAC is a low-power, high-efficiency, synchronous buck regulator with integrated MOSFETs. Features: Input voltage range: 2.5V to 5.5V Output voltage range: 0.6V to 5V Output current: up to 2A High efficiency: up to 95% Low quiescent current: <1mA Low shutdown current: <1uA Fixed frequency: 1.2MHz Programmable soft-start Over-temperature protection Over-current protection Short-circuit protection Thermal shutdown Package: SOT23-5 Applications: Portable devices Battery-powered systems Digital cameras Mobile phones PDAs MP3 players Notebook computers LCD TVs (For reference only)