BATTERY PROTECTION IC FOR 2-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
Rev.4.4_00
S-8264A/B/C Series
(2) S-8264B Series
VDD
Overcharge
detection
SENSE
comparator 1
+
−
Reference voltage 1
Overcharge
detection
comparator 2
VC1
VC2
VC3
Oscillator
+
Overcharge
detection/release
−
delay circuit
Reference voltage 2
Control
logic
Overcharge
detection
comparator 3
+
−
SR
latch
CO
Reference voltage 3
Overcharge
detection
comparator 4
+
−
Reference voltage 4
VSS
CTL
UVLO
Remark The diodes in the figure are parasitic diodes.
Figure 2
3