This harley voltage regulator utilizes the Tape & Reel (TR) package for optimized performance. There is a possibility that DC DC switching regulator can give voltage at 3.3V volts.
RP504K121D-E2 Features
RP504K121D-E2 Applications
There are a lot of RICOH Electronic Devices Co., LTD. RP504K121D-E2 Voltage Regulators applications.