Please find attached SOT-143 functions for your reference in this IC power. The power management is mounted by Surface Mount. The pins of the power management system count 4. IC management can only work with a supply voltage of 1V volts. There should be no more than 5.5V volts of supply voltage (Vsup) in this power management. In addition to the IC type POWER SUPPLY SUPPORT CIRCUIT, other types are also included in the power managment ic.
MAX6422US16+ Features
Minimum supply voltage of 1V
MAX6422US16+ Applications
There are a lot of Maxim Integrated MAX6422US16+ Voltage Supervisors applications.