It is packaged with Bulk. As a reference, this IC power includes SSOP functions for your convenience. Pin count of the power management is 16. I should note that the minimum supply voltage (Vsup) for this IC management should be at least 2.97V, which is the minimum supply voltage that should be applied. There should be no more than 3.63V volts of maximum supply voltage (Vsup) in this power management. Supplied with a operating current of 2mA, this PMIC is capable of fully function as specified.
LTC2921CGN-3.3#PBF Features
Minimum supply voltage of 2.97V 2mA operating supply current
LTC2921CGN-3.3#PBF Applications
There are a lot of Analog Devices, Inc. LTC2921CGN-3.3#PBF Voltage Supervisors applications.