SCI7660 Series
SCI7000 Series
EPSON
1–9
Technical Manual
DC/DC
Converter
Positive Voltage Conversion
Diodes can be added to a circuit connected in parallel to
make a negative voltage positive.
5 V
C2
10
µ
F
V
DD
= 0 V
V
O
' = 3.8 V
V
I
= –5 V
1M
Ω
+
C1
10
µ
F
+
8
7
6
5
1
2
3
4
Simultaneous Voltage Conversion
Combining a multiplier circuit with a positive voltage
conversion circuit generates both –10 and 3.8 V outputs
from a single input.
Potential levels
5 V
C2
10
µ
F
V
DD
= 0 V
V
O2
= 3.8 V
V
O1
= –10 V
V
I
= –5 V
1M
Ω
+
+
C3
C4
10
µ
F
10
µ
F
+
8
7
6
5
1
2
3
4
C1
10
µ
F
+
V
O2
= 3.8 V
V
O1
= –10 V
V
DD
= 0 V
V
I
= –5 V
Summary of Contents for SCI 7660 SERIES
Page 1: ...1 DC DC Converter ...
