R1223N332C
200
180
Ripple Voltage Vrpp(mV)
L=27uH
R1223N502C
200
L=27uH
160
140
120
100
80
60
40
20
0
1
10
VIN4.5V
VIN12V
Ripple Voltage Vrpp(mV)
VIN8V
180
160
140
120
100
80
60
40
20
VIN6V
VIN8V
VIN12V
100
1000
0
1
10
100
1000
Output Current IOUT(mA)
Output Current IOUT(mA)
4) Oscillator Frequency vs. Input Voltage
R1223N152B
600
Oscillator Frequency fosc(kHz)
L=27uH
R1223N152A
600
Oscillator Frequency fosc(kHz)
L=27uH
500
400
300
200
100
0
0
5
10
15
Input Voltage VIN(V)
500
400
300
200
100
0
0
5
10
15
Input Voltage VIN(V)
5) Output Voltage vs. Input Voltage
R1223N152B
1.53
Output Voltage Vout(V)
Output Voltage Vout(V)
L=27uH
R1223N152A
1.53
1.52
1.51
1.50
1.49
1.48
1.47
L=27uH
1.52
1.51
1.50
1.49
1.48
1.47
0
5
10
15
Input Voltage VIN(V)
0
5
10
15
Input Voltage VIN(V)
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Rev. 1.11
- 13 -
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
