n TYPICAL CHARACTERISTCS
1) Output Voltage vs. Output Current
L=27uH
L=27uH
R1221N33AH
R1221N15XH
3.400
1.520
1.515
1.510
1.505
1.500
1.495
1.490
1.485
1.480
3.380
3.360
3.340
3.320
3.300
3.280
3.260
3.240
3.220
3.200
13.2V
12V
8V
8V
5V
4.5V
2.3V
1E-05 0.0001 0.001 0.01
0.1
1
1E-05 0.0001 0.001 0.01
0.1
IOUT(A)
1
Output Current
IOUT(A)
Output Current
2) Efficiency vs. Output Current
CD104-27uH
Si3443DV
(VIN=12V)CD104-27uH
(VIN=4.5V)
R1221N33AA
R1221N33AA
Si3443DV
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
(mA)
1000
0.1
1
10
100
IOUT(mA)
1000
Output Current OUT
I
Output Current
(VIN=4.5V) CD104-27uH
(VIN=12V)CD104-27uH
R1221N33AC
R1221N33AB
Si3443DV
Si3443DV
100
80
60
40
20
0
100
80
60
40
20
0
0.1
1
10
100
IOUT(mA)
1000
0.1
1
10
100
(mA)
1000
Output Current
Output Current IOUT
12345
Rev. 1.11
- 11 -
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
