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R1232D221B Datasheet(PDF) 2 Page - RICOH electronics devices division

Part # R1232D221B
Description  PWM STEP-DOWN DC/DC CONVERTER WITH SYNCHRONOUS RECTIFIER
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Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division

R1232D221B Datasheet(HTML) 2 Page - RICOH electronics devices division

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R1232D
2
BLOCK DIAGRAMS
R1232Dxx1A/B
2
VIN
LX
PGND
VOUT
CE
Output
Contorol
3
Current Limit
1
QR
S
Oscillator
TEST Circuit
TEST “L” or GND Fixed
6
Slope
Compensation
Phase
Compensation
5
Soft Start
UVLO
4
“H” Active
VDD
7
AGND
Error
Amplifer
PWM
Comparator
8
Vref
Chip Enable
R1232D001C/D
2
VIN
LX
PGND
VFB
CE
Output
Contorol
3
Current Limit
1
QR
S
Oscillator
TEST Circuit
TEST “L” or GND Fixed
6
Slope
Compensation
Phase
Compensation
5
Soft Start
UVLO
Chip Enable
4
“H” Active
VDD
7
AGND
Error
Amplifer
PWM
Comparator
8
Vref


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