A Tape & Reel (TR) case is used to deliver the Voltage Regulated IC. A SOT-23-5 case is used for packaging. As you can see, the IC chip has 5 terminations. There are 5 pins in total in this voltage regulator IC. It is important to note that this device has a FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR regulator type.
RP173N121D-TR-FE Features
RP173N121D-TR-FE Applications
There are a lot of RICOH Electronic Devices Co., LTD. RP173N121D-TR-FE Linear Voltage Regulators applications.