SCI7660 Series
1–8
EPSON
SCI7000 Series
Technical Manual
TYPICAL APPLICATIONS
Parallel Connection
Connecting two or more chips in parallel reduces the
output impedance by 1/n, where n is the number of de-
vices used.
5 V
C1
10
µ
F
C2
10
µ
F
V
DD
= 0 V
V
I
= –5 V
V
O
= –10 V
1M
Ω
+
+
8
7
6
5
1
2
3
4
C1
10
µ
F
1M
Ω
+
8
7
6
5
1
2
3
4
Serial Connection
Connecting two or more chips in series obtains a higher
output voltage than can be obtained using a parallel
connection, however, this also raises the output imped-
ance.
Potential levels
5 V
C1
10
µ
F
C2
10
µ
F
V
DD
= 0 V
V
I
= –5 V
V
O
' = –15 V
V
O
= –10 V = V
I
'
V
DD
' = V
I
= –5
1M
Ω
+
+
8
7
6
5
1
2
3
4
C1
10
µ
F
C2
10
µ
F
1M
Ω
+
+
8
7
6
5
1
2
3
4
V
DD
(0 V)
V
I
(–5 V)
V
O
(–10 V)
Primary stage
Secondary stage
V
DD
V
I
V
O
(–15 V)
Summary of Contents for SCI 7660 SERIES
Page 1: ...1 DC DC Converter ...
