BUY OB2273 https://www.utsource.net/itm/p/4964419.html

Description: The OB2273 is a high-efficiency, low-noise, low-dropout linear regulator with a wide input voltage range and a low quiescent current. Features: Wide input voltage range: 2.5V to 16V Low quiescent current: 10μA Low dropout voltage: 0.2V (typical) Output current: up to 500mA Low output noise: 10μVrms (typical) High efficiency: up to 95% Over-temperature protection Over-current protection Short-circuit protection Applications: Battery-powered systems Automotive systems Industrial systems Portable devices Power management systems (For reference only)