R1221N RICOH electronics devices division, R1221N Datasheet - Page 14

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

4) Oscillator Frequency vs. Input Voltage
5) Output Voltage vs. Input Voltage
Rev. 1.11
600
500
400
300
200
100
1.53
1.52
1.51
1.50
1.49
1.48
1.47
200
180
160
140
120
100
80
60
40
20
0
0
12345
0
1
0
Output Current
R1221N33AC
R1221N15XB
R1221N15XB
Input Voltage
Input Voltage V
10
5
5
VIN4.5V
VIN8V
VIN12V
I
OUT
V
100
IN
10
IN
(mA)
10
(V)
L=27uH
C=47uF(Ta)
(V)
L=27uH
L=27uH
1000
15
15
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1.53
1.52
1.51
1.50
1.49
1.48
1.47
600
500
400
300
200
100
200
180
160
140
120
100
80
60
40
20
0
0
0
1
0
Output Current
R1221N15XA
R1221N50XC
Input Voltage V
R1221N15XA
Input Voltage V
10
5
5
VIN6V
VIN8V
VIN12V
I
OUT
100
IN
10
IN
(V)
10
L=27uH
C=47uF(Ta)
(mA)
(V)
L=27uH
L=27uH
1000
15
15