R1211D002B RICOH [RICOH electronics devices division], R1211D002B Datasheet - Page 17

• Manufacturer Part Number: R1211D002B
• Description: STEP-UP DC/DC CONTROLLER
• Manufacturer: RICOH [RICOH electronics devices division]

<Components>
Inductor (L)
Diode (SD)
Capacitors
NMOS Transistor : IRF7601 (International Rectifier)
Resistors
C5
∗UVLO Detector Threshold/
Hysteresis Range Test
∗CE "L" Input Voltage/"H" Input Voltage Test
∗Soft-start Time Test
C3
2.5V/6V
V
GND
V
GND
V
GND
IN
IN
IN
: 22µH (TDK LDR655312T-220)
: CRS02 (Toshiba)
C1 : 680pF (Ceramic), C2: 22µF (Tantalum)+2.2µF (Ceramic),
C3 : 68µF (Tantalum)+2.2µF (Ceramic), C5: 22µF (Tantalum)
: R1: 90kΩ, R2: 10kΩ, R3: 30kΩ
Coil
DELAY
DELAY
DELAY
EXT
EXT
EXT
V
V
CE
V
CE
CE
FB
FB
FB
OSCILLOSCOPE
0V/3.3V
OSCILLOSCOPE
NMOS
R3
Diode
C1
R1
R2
V
C2
OUT
Rout
OSCILLOSCOPE
∗ CE "L" Input Current/"H" Input Current Test
6V
V
GND
IN
DELAY
V
CE
FB
A
0V/6V
R1211x
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