BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
Rev.3.3
_00
S-8244 Series
Block Diagram
VCC
SENSE
Overcharge detection
comparator 1
+
-
Reference voltage 1
VC1
Overcharge detection
comparator 2
+
-
Overcharge
detection
delay circuit
ICT
Control
logic
Reference voltage 2
VC2
Overcharge detection
comparator 3
+
-
Reference voltage 3
VC3
CO
Overcharge detection
comparator 4
+
-
Reference voltage 4
VSS
Remark
In the case of Nch open-drain output, only the Nch transistor will be
connected to the CO pin. In the case of Pch open-drain output, only
the Pch transistor will be connected to the CO pin.
Figure 1
2
Seiko Instruments Inc.