R1212D Datasheet, PDF (18/41 Pages) RICOH electronics devices division – STEP-UP DC/DC CONTOLLER

R1212D
C1
C2
C6
R5
Inductor
Diode
VIN
DELAY
EXT
VFB
R3
NMOS
C4
GND
AMPOUT
VREFOUT
DTC
C5 R4
R6
C7
VOUT
R1
C3
R2
Fig.12 Output Current vs. Output Voltage/Efficiency, Response Characteristics Test Circuit
Inductor
NMOS
Diode
C1
C2
C3
C4
C5
LDR655312T-100(TDK) [R1212DxxxA]
LDR655312T-4R7(TDK) [R1212DxxxB]
LDR655312T-220(TDK) [R1212DxxxC]
CPH6415 (Sanyo)
CRS02 (Toshiba)
2.2µF
C6
1µF
C7
15µF
SetV 5V
1000pF[R1212DxxxA] R1 120kΩ
680pF[R1212DxxxB]
R2 30kΩ
1500pF[R1212DxxxC] R3
1000pF[R1212DxxxA] R4
680pF[R1212DxxxB]
R5
1500pF[R1212DxxxC] R6
0.1µF
0.1µF
10V
180kΩ
20kΩ
1kΩ
4.7kΩ
240kΩ
300kΩ
15V
140kΩ
10kΩ
18