BATTERY PROTECTION IC FOR 1-CELL PACK
S-8241 Series
Rev.7.6_00
Block Diagram
Delay circuit
Clock generation circuit
DO
CO
VDD
Counter circuit
Load
short-circuiting
detection circuit
−
Level conversion circuit
0V battery charging circuit
0V battery charge
+
RCOL
Overcharge
detection
inhibition circuit
comparator
Overdischarge
detection
RVMD
+
VM
comparator
−
+
Overcurrent 1
RVMS
detection comparator
Charger
detection circuit
−
The overdischarge
hysterisis is released when
a charger is detected.
+
−
Overcurrent 2
detection comparator
VSS
Remark The diodes in the IC are parasitic diodes.
Figure 1
2
Seiko Instruments Inc.
SII [ SEIKO INSTRUMENTS INC ]
