深圳市元达佳电子科技有限公司是专营日本理光RICOH电源管理芯片，LDO稳压IC：
R1100D121C、R1100D181C、R1111N151B、R1111N251B、R1111N281B、R1111N301B、R1111N331B、R1111N501B、R1111N301A、R1111N501A、R1114N151D、R1114N181D、R1114N251A、R1114N301B、R1180N301B、R1180N331B、
R1114N331B、R1114N351A、R1114N501B、R1114N501A、R1131N151D、R1131N331D、R1161D121D、R1161D121B

升压IC:
RN5RK301A、R1210N301A、RN5RK271A、R1210N331A、RN5RK501A、RN5RK502A、RN5RY202A、R1211N002D、R1280D002A
降压IC：
R1224N102H、R1224N332F、R1224N502F、R1224N502G、R1224N502M、R1223N332F、R1224N362H、R1224N102M

电压检测（复位IC）：
R3111N111A、R3111N181C、R3111N201C、R3111N222A、R3111N291A、R3111N091A、R3111N251C、R3111N301C、R3111N311A、R3111N321A、R3111N341A、R3111N401A、
R3111N451A、R3111N501A、R3111H271C、R3111H401A、R3111H421A、R3111H291C、R3111N221A、R3111H251C

RTC实时时钟：
RS5C372A、RS5C348A、RS5C313、RS5C316A、R2051S01、R2025S、RS2051K