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S1F76640 Series
2–54 EPSON S1F70000 Series
Technical Manual
(13) Step-up power conversion (14) Step-up power conversion
efficiency vs. Oscillation frequency 2 efficiency vs. Oscillation frequency 3
(15) Step-up start voltage (1) vs. Load resistance (16) Stabilization output saturation
resistance vs. Load current
100
90
80
70
60
50
40
30
20
10
0
Peff[%]
101 100 1000
fosc[kHz]
100
90
80
70
60
50
40
30
20
10
0
Peff[%]
101 100 1000
fosc[kHz]
Ta=25˚C
V
DD
=3V
C
1
to C
4
=10µF
I
O
=10mA
I
O
=2mA
I
O
=5mA
Ta=25˚C
V
DD
=2V
C
1
to
C
4
=10µF
I
O
=5mA
I
O
=2mA
I
O
=1mA
I
O
=0.5mA
I
O
=1mA
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
V
STA1
[V]
0.5
0.4
0.3
0.2
0.1
0
V
REG
–V
O
[V]
100 1000 10000 100000
R
L
[Ω]
I
O
[mA]
0 5 10 15 20 25 30
Ta=25˚C
C
1 to
C
4
=10µF
R
OSC
=1MΩ
V
O
=8V
V
O
=12V
V
O
=20V
Ta=25˚C
C
1
to
C
4
=10µF