BUY R39MF5 https://www.utsource.net/itm/p/11732074.html

Description: The R39MF5 is an IC from Sharp that is a 7-pin DIP type voltage regulator. Features: rn Output Voltage: 5V rn Output Current: 100mA rn Input Voltage Range: 4.5V to 10V rn Low Dropout Voltage: 0.2V rn High Ripple Rejection: 70dB rn Low Quiescent Current: 0.2mA Applications: The R39MF5 is suitable for use in a wide range of applications, including portable devices, battery-powered equipment, and automotive electronics. It can be used to provide a stable 5V output voltage from a 4.5V to 10V input voltage. (For reference only)