Epson Power Supply IC S1F70000 Technical Manual page 23

Power supply ic
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S1F76600 Series
100
I
= 2mA
O
90
I
= 5mA
O
I
= 10mA
O
80
70
60
I
= 20mA
O
50
40
30
20
10
0
1
10
(9) Multiplication efficiency vs.
Clock frequency
100
90
80
70
Ta = 25 C
V
= –5.0V
60
I
50
40
30
20
10
0
0
10
(11) Multiplication efficiency/input current
vs. Output current
1–6
I
= 30mA
O
V
= –5.0V
I
100
f
[kHz]
OSC
I
I
Peff
20
30
40
I
[mA]
O
100
I
O
I
O
90
I
O
I
O
80
70
60
50
40
30
20
10
0
1000
1
(10) Multiplication efficiency vs.
100
100
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
0
0
0
50
(12) Multiplication efficiency/input current
EPSON
= 0.5mA
= 1.0mA
= 2.0mA
= 4.0mA
10
f
[kHz]
OSC
Clock frequency
Ta = 25 C
V
= –3.0V
I
5
10
15
20
I
[mA]
O
vs. Output current
V
= –3.0V
I
100
1000
100
90
80
I
70
I
60
50
40
Peff
30
20
10
0
25
30
S1F70000 Series
Technical Manual

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