R1211D002B RICOH [RICOH electronics devices division], R1211D002B Datasheet - Page 15

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

<Components>
Inductor (L)
Diode (SD)
Capacitors
NMOS Transistor
Resistors
∗DELAY Pin Detector Threshold Voltage Test
∗UVLO Detector Threshold/Hysteresis Range Test
∗Soft-start Time Test
C5
C3
3.3V
V
GND
IN
V
GND
V
GND
IN
DELAY
IN
EXT
Coil
AMPOUT
V
: 22µH (TDK LDR655312T-220)
: CRS02 (Toshiba)
: IRF7601 (International Rectifier)
: R1: 90kΩ, R2:10kΩ, R3:30kΩ, R4:30kΩ, Rout:1kΩ/330Ω
DELAY
FB
DELAY
C1:680pF(Ceramic), C2:22µF (Tantalum)+2.2µF (Ceramic),
C3:68µF (Tantalum)+2.2µF (Ceramic), C4:2200pF(Ceramic), C5:22µF(Tantalum)
EXT
V
EXT
V
FB
FB
OSCILLOSCOPE
C4 R4
OSCILLOSCOPE
R3
NMOS
Diode
C1
R1
R2
V
C2
OUT
∗AMP "H" Output Current/"L"
Output Current Test
Rout
OSCILLOSCOPE
3.3V
V
GND
IN
AMPOUT
DELAY
V
FB
A
1V
0.9V/1.1V
R1211x
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