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100
90
80
70
4 times step-up Peff
3 times step-up Peff
60
4 times step-up I
50
3 times step-up I
DD
40
2 times
step-up I
DD
30
20
10
0
0
10
(9) Step-up power conversion efficiency vs.
Output current 1
Input current vs. Output current 1
100
90
80
70
4 times step-up Peff
60
3 times step-up Peff
50
4 times step-up I
DD
40
3 times
step-up I
DD
30
20
10
2 times step-up I
0
0
1
2
3
4
(11) Step-up power conversion efficiency vs. Output current 3
Input current vs. Output current 3
S1F70000 Series
Technical Manual
150
2 times step-up Peff
120
90
DD
60
30
Ta=25˚C
V
=5V
DD
C
C
=10
F
1 to
4
0
20
30
50
2 times step-up Peff
40
30
20
10
Ta=25˚C
V
=2V
DD
C
C
=10
F
1 to
4
DD
0
5
6
7
8
9
10
EPSON
100
2 times step-up Peff
90
80
70
3 times step-up Peff
60
4 times step-up Peff
50
4 times step-up I
DD
3 times
40
step-up I
DD
2 times
30
step-up I
DD
20
10
0
0
5
10
(10) Step-up power conversion efficiency vs.
Output current 2
Input current vs. Output current 2
100
90
80
70
60
I
=2mA
O
50
I
O
40
I
=5mA
O
30
20
10
0
1
10
(12) Step-up power conversion efficiency - Os vs.illation
frequency 1
S1F76640 Series
100
90
80
70
60
50
40
30
20
Ta=25˚C
V
=3V
DD
10
C
C
=10
F
1 to
4
0
15
20
=10mA
I
=20mA
O
Ta=25˚C
V
=5V
DD
C
C
=10
F
1 to
4
100
1000
2–53
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