Isolated voltage sensing, dc power monitoring ic, ac voltage sensing circuit - tatanh1983/conchodom GitHub Wiki
CAT811 Series 2.93V 140ms 4-Pin Microprocessor Power Supply Supervisor-SOT-143 https://www.futureelectronics.com/p/semiconductors--analog--system-management--voltage-supervisors/cat811stbi-gt3-onsemi-6363675