Please refer to power management for SOT-23 functions. By Surface Mount, IC management has been mounted. Pin count of the power management is 5. 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. There are other types of IC included in the power managment ic, such as types POWER SUPPLY SUPPORT CIRCUIT.
MAX6420UK23+ Features
Minimum supply voltage of 1V
MAX6420UK23+ Applications
There are a lot of Maxim Integrated MAX6420UK23+ Voltage Supervisors applications.