Ricoh RH5RI443B-T1 VFM step-up DC/DC converter. Output voltage 4.4V. Internal Tr./External Tr. (selectively available)(oscillator frequency 100kHz, with chip enable function) Taping type T1
Catalyst CAT93C5611UI-28TE13 2K 2.85-3.0V Supervisory circuit with microwire serial CMOS EEPROM, precision reset controller and watchdog timer