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Part Name
Description
ICL7673 View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
ICL7673
Automatic Battery Back-Up Switch
Intersil
ICL7673 Datasheet PDF : 7 Pages
1
2
3
4
5
6
7
ICL7673
MAIN
SUPPLY
3V
BACKUP
SUPPLY
R
2
PNP
PNP
R
1
R
4
V
P
1
8
V
O
NC
P-
ICL7673
6
V
S
S-
R
3
(NOTE 4)
EXTERNAL
EQUIPMENT
2
GND
3
+
-
NOTE 4. > 1M
W
FIGURE 11. HIGH CURRENT BATTERY BACKUP SYSTEM
R
F
R
S
MAIN
SUPPLY
GND
+
BATTERY
BACKUP
-
V
P
8
ICL7673
V
S
S-
2
3
GND
V
O
GND
FIGURE 12. LOW CURRENT BATTERY BACKUP SYSTEM WITH HYSTERESIS
R
2
PNP
+V
MAIN
SUPPLY
MAIN
SUPPLY
GND
PNP
R
F
R
1
R
4
R
S
V
P
8
1
NC
P-
ICL7673
6
V
S
S-
2
3
4
+
BACKUP
-
SUPPLY
R
3
EXTERNAL
EQUIPMENT
FIGURE 13. HIGH CURRENT BACKUP SYSTEM WITH HYSTERESIS
6
FN3183.4
July 22, 2005
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