It is packaged with Tape & Reel (TR). There are SOT-89 functions included in this PMIC so that you can refer to them. There are a lot of similarities between this IC management and other Active products.
R3111H451A-T1-FE Features
Active type
R3111H451A-T1-FE Applications
There are a lot of RICOH Electronic Devices Co., LTD. R3111H451A-T1-FE Voltage Supervisors applications.