In terms of packaging, power management follows the Tape & Reel (TR) model. For your reference, this PMIC includes a list of SOT-23-5 functions. It also contains ICs of other kinds, such as POWER SUPPLY SUPPORT CIRCUIT, which are included in the power management.
RP300N46AC-TR-FE Features
RP300N46AC-TR-FE Applications
There are a lot of RICOH Electronic Devices Co., LTD. RP300N46AC-TR-FE Voltage Supervisors applications.