ICL7660S
+8V
56k
50k
100k
50k
+8V
-
ICL7611
+
ICL8069
+
100µF -
100Ω
-
10µF
+
1
8
2
7
ICL7660S
3
6
4
5
VOUT
800k
250k
VOLTAGE
ADJUST
-
100µF
+
FIGURE 20. REGULATING THE OUTPUT VOLTAGE
+5V LOGIC SUPPLY
TTL DATA
INPUT
+
10µF -
16
4
15
1
8
2 ICL7660S 7
3
6
4
5
10µF
-
+
12 11
1
3
IH5142
13 14
RS232
+ 5V
DATA
OUTPUT -5V
FIGURE 21. RS232 LEVELS FROM A SINGLE 5V SUPPLY
Other Applications
Further information on the operation and use of the
ICL7660S may be found in AN051 “Principles and
Applications of the ICL7660 CMOS Voltage Converter”.
10
FN3179.5
March 6, 2008