S-8241 Datasheet, PDF (2/38 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 1-CELL PACK

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