S-8215AAA-K8T2U Datasheet, PDF (2/29 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK

BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK (SECONDARY PROTECTION)
S-8215A Series
Rev.2.3_02
 Block Diagram
VDD
VC1
VC2
VC3
VC4
VC5
VSS
Overcharge
detection
comparator 1
+
−
Reference voltage 1
Overcharge
detection
comparator 2
+
−
Reference voltage 2
Overcharge
detection
comparator 3
+
−
Control
circuit
Reference voltage 3
Overcharge
detection
comparator 4
+
−
Reference voltage 4
Overcharge
detection
comparator 5
+
−
Reference voltage 5
Oscillator
Overcharge
detection / release
delay circuit
CO^*1
*1. The CO pin is connected only to Nch transistor in the case of Nch open-drain output.
The CO pin is connected only to Pch transistor in the case of Pch open-drain output.
Remark The diodes in the figure are parasitic diodes.
Figure 1
2