In this PMIC, you can find MSOP functions for your reference. There are 10 pins on the power managment ic. There should be a minimum voltage supply (Vsup) of 4V for this PMIC. The maximum supply voltage (Vsup) in this PMIC should not exceed 80V volts.
LT4356HMS-3 Features
Minimum supply voltage of 4V
LT4356HMS-3 Applications
There are a lot of Analog Devices, Inc. LT4356HMS-3 Voltage Supervisors applications.