R1221N RICOH electronics devices division, R1221N Datasheet - Page 13

• Manufacturer Part Number: R1221N
• Description: Step-down DC/DC Converter with Voltage Detector
• Manufacturer: RICOH electronics devices division

3) Ripple Voltage vs. Output Current
Rev. 1.11
100
80
60
40
20
200
180
160
140
120
100
200
180
160
140
120
100
0
80
60
40
20
80
60
40
20
0
0
0.1
1
1
R1221N50XC(VIN=6.0V)
Output Current
Output Current
1
Output Current
R1221N33AA
R1221N33AB
10
10
10
VIN4.5V
VIN8V
VIN12V
VIN4.5V
VIN8V
VIN12V
I
OUT
I
I
OUT
OUT
100
100
(mA)
(mA)
(mA)
100
L=27uH
C=47uF(Ta)
CD104-27uH
Si3443DV
L=27uH
C=47uF(Ta)
1000
1000
1000
- 13 -
200
180
160
140
120
100
100
200
180
160
140
120
100
80
60
40
20
80
60
40
20
80
60
40
20
0
0
0
0.1
1
1
R1221N50XC(VIN=12V)
Output Current
Output Current I
Output Current
1
R1221N50XB
R1221N50XA
10
10
10
VIN6V
VIN8V
VIN12V
VIN6V
VIN8V
VIN12V
I
OUT
I
OUT
OUT
100
12345
100
(mA)
(mA)
L=27uH
C=47uF(Ta)
(mA)
100
CD104-27uH
Si3443DV
L=27uH
C=47uF(Ta)
1000
1000
1000