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RP108J081D-T1-FE Datasheet(PDF) 2 Page - RICOH electronics devices division |
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RP108J081D-T1-FE Datasheet(HTML) 2 Page - RICOH electronics devices division |
2 / 28 page RP108J NO.EA-203-150817 2 BLOCK DIAGRAMS RP108Jxx1B/E RP108Jxx1D/F VDD GND VOUT CE Vref Current Limit Thermal Shutdown VFB Reverse Detecter VDD GND VOUT CE Vref Current Limit Thermal Shutdown VFB Reverse Detecter SELECTION GUIDE The output voltage, auto discharge function, and the soft-start time for the ICs can be selected at the user’s request. Product Name Package Quantity per Reel Pb Free Halogen Free RP108Jxx1 ∗(y) -T1-FE TO-252-5-P2 3,000 pcs Yes Yes xx: The set output voltage (VSET) can be designated in the range of 0.8V(08) to 4.2V(42) in 0.1V steps. y: If the output voltage includes the 3rd digit, indicate the digit of 0.01V. (1.25V, 1.85V, 2.85V) Ex. If the output voltage is 1.25V, RP108J121 ∗5-T1-FE. If the output voltage is 1.85V, RP108J181 ∗5-T1-FE. If the output voltage is 2.85V, RP108J281 ∗5-T1-FE. ∗: Designation of auto-discharge function at off state and the soft-start time (B) No auto-discharge function , soft start time typ. 180 μs (D) Auto-discharge function , soft start time typ. 180 μs (E) No auto-discharge function , soft start time typ. 570 μs (F) Auto-discharge function , soft start time typ. 570 μs . Auto-discharge function quickly lowers the output voltage to 0V, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor. Refer to CONSTANT SLOPE CIRCUIT for detailed information on the difference of soft-start time and its effect. |
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