S-8264AAA-I8T1U Datasheet, PDF (2/36 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 2-SERIAL

BATTERY PROTECTION IC FOR 2-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
S-8264A/B/C Series
Rev.4.2_02
 Block Diagrams
(1) S-8264A Series
VDD
SENSE
Overcharge
detection
comparator 1
+
−
Reference voltage 1
VC1
Overcharge
detection
comparator 2
Oscillator
+
Overcharge
detection/release
−
delay circuit
Reference voltage 2
Control
VC2
Overcharge
detection
logic
comparator 3
+
−
Reference voltage 3
CO
VC3
Overcharge
detection
comparator 4
+
−
VSS
Reference voltage 4
CTL
Remark The diodes in the figure are parasitic diodes.
Figure 1
2