This power ic is packaged in a way that looks like a Tape & Reel (TR). Please refer to power management for SOT-23-5 functions. There are a lot of similarities between this IC power and other Active products.
R3118N121C-TR-FE Features
Active type
R3118N121C-TR-FE Applications
There are a lot of RICOH Electronic Devices Co., LTD. R3118N121C-TR-FE Voltage Supervisors applications.