BUY LTC1966IMS8 https://www.utsource.net/itm/p/468042.html
Precision Micropower, SIGMA RMS-to-DC Converter
Description: The LTC1966IMS8 is a low power, low noise, low dropout, dual output, high PSRR linear regulator. Features: Low Dropout Voltage: 350mV at 200mA Low Quiescent Current: 200μA High PSRR: 80dB at 1kHz Output Voltage Accuracy: ±2% Output Current: 200mA Thermal Shutdown Protection Short Circuit Protection Output Voltage Ranges: 1.2V to 5.0V Applications: Battery-Powered Systems Portable Equipment Automotive Industrial (For reference only)