r1230d RICOH Co.,Ltd., r1230d Datasheet - Page 2
r1230d
Manufacturer Part Number
r1230d
Description
Pwm/vfm Step-down Dc/dc Converter With Synchronous Rectifier
Manufacturer
RICOH Co.,Ltd.
Datasheet
1.R1230D.pdf
(20 pages)
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Quantity
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Part Number:
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Manufacturer:
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Manufacturer:
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Part Number:
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Manufacturer:
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Part Number:
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Manufacturer:
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Quantity:
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Lx
Lx
Rev. 1.12
V
V
R1230DXX1A/B
R1230D001C/D
IN
IN
BLOCK DIAGRAM
PGND
PGND
Current Protection
Current Protection
OUTPUT
OUTPUT
CONTROL
CONTROL
PWM/VFM
PWM/VFM
CONTROL
CONTROL
V
V
DD
DD
AGND
AGND
Soft Start
Soft Start
Phase Compensation
Phase Compensation
- 2 -
UVLO
UVLO
OSC
OSC
Vref
Vref
MODE
MODE
Chip Enable
Chip Enable
CE
“L”= PWM
“L”= PWM “H”= VFM
“H”= VFM
“H” Active
“H” Active
CE
CE
V
V
OUT
FB
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