In this PMIC, you can find SOT-23-8 functions for your reference. There are a lot of similarities between this IC power and other Multi-Voltage Supervisor products. There is a voltage supply of 2 for the PMIC chip, and the chip conducts at that voltage. Surface Mount is the one that mounts power management. 8 pins are on the supervisor. There should be a minimum voltage supply (Vsup) of 1V for this PMIC. This IC power should be powered by no more than 5.5V volts of supply voltage (Vsup). Power management' mounting is recommended to be done with the Surface Mount type of mounting. It is recommended to set the supervisor's temperature to this range: -40°C~85°C TA. Power management has an output of Open Drain or Open Collector during operation.
MAX6391KA26+ Features
Multi-Voltage Supervisor type Minimum supply voltage of 1V
MAX6391KA26+ Applications
There are a lot of Maxim Integrated MAX6391KA26+ Voltage Supervisors applications.