Please refer to power management for SOT-23 functions. The power management is mounted by Surface Mount. Power managment ic pin count is 3. Normally, the supply voltage (Vsup) for this PMIC should not be lower than 1.6V. There should be no more than 5.5V volts of supply voltage (Vsup) in this power management. There are also other types of integrated circuits included in the supervisor, like POWER SUPPLY SUPPORT CIRCUIT.
MAX6428ORUR+ Features
Minimum supply voltage of 1.6V
MAX6428ORUR+ Applications
There are a lot of Maxim Integrated MAX6428ORUR+ Voltage Supervisors applications.