R1211D002A RICOH electronics devices division, R1211D002A Datasheet - Page 9

• Manufacturer Part Number: R1211D002A
• Description: Step-up DC/DC Controller
• Manufacturer: RICOH electronics devices division

<R1211X002A/R1211X002C>
<R1211X002B/R1211X002D>
[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.
Rev. 1.10
TYPICAL APPLICATIONS AND TECHNICAL NOTES
NMOS: IRF7601 (International Rectifier)
Inductor: LDR655312T-100 10 H (TDK) for R1211X002B
Diode: CRS02 (Toshiba)
C1: 4.7 F (Ceramic)
C2: 0.22 F (Ceramic)
C3: 10 F (Ceramic)
C4: 680pF(Ceramic)
C1
C2
LDR655312T-220 22 H (TDK) for R1211X002D
NMOS: IRF7601 (International Rectifier)
Inductor : LDR655312T-100 10 H (TDK) for R1211X002A
Diode: CRS02 (Toshiba)
C1: 4.7 F (Ceramic)
C2: 0.22 F (Ceramic)
C3: 10 F (Ceramic)
C4: 680pF(Ceramic)
C5: 2200pF(Ceramic)
C1
VIN
DELAY
GND
C2
Inductor
: LDR655312T-220 22 H (TDK) for R1211X002C
VFB
R1: Setting Output Voltage Resistor1
R2: Setting Output Voltage Resistor2
R3 : 30k
EXT
CE
V
DELAY
GND AMPOUT
IN
Inductor
- 9 -
VFB
EXT
CE Control
NMOS
R3
C5
R1: Output Voltage Setting Resistor 1
R2: Output Voltage Setting Resistor 2
R3: 30k
R4: 30k
Diode
R4
C4
NMOS
Diode
R3
R1
R2
C4
C3
R1
R2
C3