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RP112K221B Datasheet(PDF) 7 Page - RICOH electronics devices division |
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RP112K221B Datasheet(HTML) 7 Page - RICOH electronics devices division |
7 / 32 page RP112x NO.EA-258-131024 7 TYPICAL APPLICATIONS C1 RP112x Series VDD VOUT CE GND C2 VOUT External Parts Example: C1, C2: Ceramic Capacitor 1.0µF, Murata, GRM155B31A105KE15 TECHNICAL NOTES Phase Compensation In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, use a 1.0 μF or more capacitor C2. In case of using a tantalum capacitor, the output may be unstable due to inappropriate ESR. Therefore, the full range of operating conditions for the capacitor in the application should be considered. PCB Layout The high impedances of VDD and GND could be a reason for the noise pickup and unstable operation. Therefore, it is imperative that the impedances of VDD and GND be the lowest possible. Also, place a 1.0µF or more capacitor (C1) between VDD pin and GND pin as close as possible to each other. As for C2 output capacitor that is used for phase compensation, place it between VOUT pin and GND as close as possible to each other (Refer to TYPICAL APPLICATIONS). |
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Similar Description - RP112K221B |
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