BUY LT1121AIS8-5 https://www.utsource.net/itm/p/11569855.html

Description: The LT1121AIS8-5 is a low power, low noise, low dropout, monolithic linear regulator. Features: Low Dropout Voltage: 0.4V at 100mA Low Quiescent Current: 5mA Low Noise: 10μV RMS (10Hz to 100kHz) Output Voltage Range: 1.2V to 37V Output Current: 100mA Thermal Shutdown Short Circuit Protection Low Profile (8-Pin SOP) Applications: Battery-Powered Systems Portable Instruments Automotive Electronics Telecom Systems Industrial Controls Medical Electronics (For reference only)