S-8261 Datasheet, PDF (3/36 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR SINGLE-CELL PACK

Rev.1.9_00
BATTERY PROTECTION IC FOR SINGLE-CELL PACK
S-8261 Series
„ Block Diagrams
1. Product with 0 V Battery Charge Function
DP
Output control circuit
VDD
Oscillator control circuit
Divider
0 V battery charge
control
logic
circuit
DO
VSS
+
−
Overcharge
detection
comparator
Overdischarge
detection
comparator
+
−
Charger
detection circuit
+
Overcurrent 1
−
detection comparator
+
Overcurrent 2
−
detection comparator
+
Load short-circuiting ^−
detection comparator
CO
RVMD
VM
RVMS
Remark All the diodes shown in the figure are parasitic diodes.
Figure 1
2. Product with 0 V Battery Charge Inhibition Function
DP
Output control circuit
VDD
Oscillator control circuit
Divider
0 V battery charge
control
logic
inhibition circuit
DO
VSS
+
−
Overcharge
detection
comparator
Overdischarge
detection
comparator
+
−
Charger
detection circuit
+
Overcurrent 1
−
detection comparator
+
Overcurrent 2
−
detection comparator
+
Load short-circuiting ^−
detection comparator
CO
RVMD
VM
RVMS
Remark All the diodes shown in the figure are parasitic diodes.
Figure 2
Seiko Instruments Inc.
3