R1232D RICOH [RICOH electronics devices division], R1232D Datasheet - Page 2

• Manufacturer Part Number: R1232D
• Description: PWM STEP-DOWN DC/DC CONVERTER WITH SYNCHRONOUS RECTIFIER
• Manufacturer: RICOH [RICOH electronics devices division]

2
BLOCK DIAGRAMS
R1232D
V
V
L
L
IN
IN
X
X
2
8
2
8
PGND
PGND
1
1
Contorol
Contorol
Output
Output
Current Limit
Current Limit
TEST Circuit
TEST Circuit
Oscillator
Oscillator
TEST
TEST
Q
Q
6
6
S
S
R1232Dxx1A/B
R1232D001C/D
R
R
3
3
PWM
Comparator
PWM
Comparator
“L” or GND Fixed
“L” or GND Fixed
V
V
DD
DD
Compensation
Compensation
Slope
Slope
Compensation
Compensation
Soft Start
Soft Start
UVLO
UVLO
Error
Amplifer
Error
Amplifer
Phase
Phase
Chip Enable
Chip Enable
Vref
Vref
7
7
AGND
AGND
5
4
5
4
“H” Active
“H” Active
V
V
CE
CE
OUT
FB