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RH5RI303B Datasheet(PDF) 3 Page - RICOH electronics devices division |
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RH5RI303B Datasheet(HTML) 3 Page - RICOH electronics devices division |
3 / 24 page 2 RH5RI ×××× – ×× ← Part Number ↑↑ ↑ ab c SELECTION GUIDE In RH5RI Series, the output voltage, the driver, and the taping type for the ICs can be selected at the user's request. The selection can be made by designating the part number as shown below : For example, the product with Output Voltage 5.0V, the External Driver (the Oscillator Frequency 100kHz) and Taping Type T1, is designated by Part Number RH5RI502B-T1. Code Contents Setting Output Voltage (VOUT): a Stepwise setting with a step of 0.1V in the range of 2.5V to 7.5V is possible. Designation of Driver: 1B: Internal Lx Tr. Driver (Oscillator Frequency 100kHz) b 2B: External Tr. Driver (Oscillator Frequency 100kHz) 3B: Internal Tr./External Tr. (selectively available) (Oscillator Frequency 100kHz, with chip enable function) Designation of Taping type : c Ex. SOT-89 : T1, T2 SOT-89-5 : T1, T2 (refer to Taping Specification) “T1” is prescribed as a standard. RH5RI BLOCK DIAGRAM Lx Vss EXT LxSW CE Error Amp. OUT VLX limiter Buffer VFM Control OSC 100kHz Chip Enable Vref + – (Note) Lx Pin............only for RH5RI ××1B and RH5RI××3B EXT Pin.........only for RH5RI ××2B and RH5RI××3B CE Pin...........only for RH5RI ××3B |
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