Ricoh RH5RI253B-T1 VFM step-up DC/DC converter. Output voltage 2.5V. Internal Tr./External Tr. (selectively available)(oscillator frequency 100kHz, with chip enable function) Taping type T1
Ricoh RH5RI253B-T2 VFM step-up DC/DC converter. Output voltage 2.5V. Internal Tr./External Tr. (selectively available)(oscillator frequency 100kHz, with chip enable function) Taping type T2