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. With power management, you get a lot of benefits that you won't find in other Active products.
R3118N421A-TR-FE Features
Active type
R3118N421A-TR-FE Applications
There are a lot of RICOH Electronic Devices Co., LTD. R3118N421A-TR-FE Voltage Supervisors applications.