It is packaged with Tape & Reel (TR). For your reference, this PMIC includes a list of SOT-23-5 functions. Other IC kinds, such as POWER SUPPLY SUPPORT CIRCUIT are included in the power management system.
RP300N29DA3-TR-FE Features
RP300N29DA3-TR-FE Applications
There are a lot of RICOH Electronic Devices Co., LTD. RP300N29DA3-TR-FE Voltage Supervisors applications.