The one found says it's an LDO by Ricoh:
SMD code Type Function Short description Case Pin. St. Sch. Mnf.
G105 R1154H105B VR-IC LDO, CE, 10,5V±2%, 150mA SOT-89-5 32vrq 6h VR4 Ric
I'd take that with a pinch of salt, SMD codes don't always match as there so many repetitions.