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R1211D002A Datasheet(PDF) 8 Page - RICOH electronics devices division |
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R1211D002A Datasheet(HTML) 8 Page - RICOH electronics devices division |
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8 / 40 page  R1211x 8 TYPICAL APPLICATIONS AND TECHNICAL NOTES <R1211x002A/R1211x002C> VIN DELAY GND EXT VFB AMPOUT Inductor R3 C4 C3 R1 R2 VOUT Diode NMOS C1 C2 C5 R4 NMOS : IRF7601 (International Rectifier) Inductor : LDR655312T-100 10 µH (TDK) for R1211x002A : LDR655312T-220 22 µH (TDK) for R1211x002C Diode : CRS02 (Toshiba) C1 : 4.7 µF (Ceramic) C2 : 0.22 µF (Ceramic) C3 : 10 µF (Ceramic) C4 : 680pF (Ceramic) C5 : 2200pF (Ceramic) R1 : Output Voltage Setting Resistor 1 R2 : Output Voltage Setting Resistor 2 R3 : 30k Ω R4 : 30k Ω <R1211x002B/R1211x002D> VIN DELAY GND EXT VFB CE Inductor R3 C4 C3 R1 R2 VOUT Diode NMOS C1 C2 CE Control NMOS : IRF7601 (International Rectifier) Inductor : LDR655312T-100 10 µH (TDK) for R1211x002B : LDR655312T-220 22 µH (TDK) for R1211x002D Diode : CRS02 (Toshiba) C1 : 4.7 µF (Ceramic) C2 : 0.22 µF (Ceramic) C3 : 10 µF (Ceramic) C4 : 680pF (Ceramic) R1 : Setting Output Voltage Resistor 1 R2 : Setting Output Voltage Resistor 2 R3 : 30k Ω [Note] These example circuits may be applied to the output voltage requirement is 15V or less. If the output voltage requirement is 15V or more, ratings of NMOS and diode as shown above is over the limit, therefore, choose other external components. |
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