BUY OZ9966 https://www.utsource.net/itm/p/8963117.html

The OZ9966 is a high-performance, low-power, high-efficiency, low-dropout (LDO) linear regulator from O2Micro. It is available in a SOP-24 package and is designed to provide a regulated output voltage of up to 5V. The OZ9966 features a wide input voltage range of 2.5V to 6.5V, a low dropout voltage of 0.2V, and an output current of up to 500mA. It also includes a power-on reset (POR) circuit, an over-temperature protection (OTP) circuit, and an over-current protection (OCP) circuit. The OZ9966 is suitable for a wide range of applications, including portable devices, consumer electronics, automotive electronics, and industrial systems. It is also suitable for use in battery-powered applications, as it can provide a regulated output voltage even when the input voltage is as low as 2.5V. (For reference only)