BUY RT8009-33PJ5 https://www.utsource.net/itm/p/5045062.html
1.25MHz, 600mA, High Efficiency PWM Step-Down DC/DC Converter
Description: RT8009-33PJ5 is a low dropout linear regulator with an output voltage of 3.3V. Features: Low Dropout Voltage: 0.6V (typ.) High Output Current: 800mA Low Quiescent Current: 8μA (typ.) Low Noise: 40μVrms (typ.) High PSRR: 80dB (typ.) Over-Temperature Protection Over-Current Protection Short-Circuit Protection Thermal Shutdown RoHS Compliant Applications: Portable Devices Battery-Powered Systems Industrial and Automotive Applications LCD Panels LED Drivers Power Management (For reference only)