S-8209BAA-T8T1Y Datasheet, PDF (13/26 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

Rev.3.6_00
BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION
S-8209B Series
 Battery Protection IC Connection Examples
Regarding the operation of protection circuit with the S-8209B Series for series-connected batteries, refer to the
application note "S-8209B Series Usage Guidelines".
1. Example of Protection Circuit with the S-8209B Series (Without Discharge Cell-balance Function)
for Series Multi-Cells
Figure 16 shows the example of protection circuit with the S-8209B Series (without discharge cell-balance function)
for series multi-cells.
P+
1 MΩ ^{CFET DFET}
1 MΩ
1 kΩ
1 kΩ
1 kΩ
1 kΩ
CO1
VDD1
DO1
CDT1
S-8209B
(1) CB1
CTLC1
CTLD1
VSS1
0.1 μF
BAT1
470 Ω
1 kΩ
1 kΩ
CO2
VDD2
DO2
CDT2
S-8209B
(2) CB2
CTLC2
CTLD2
VSS2
0.1 μF
BAT2
470 Ω
CO3
DO3
VDD3
CDT3 ^{0.01 μF 0.1 μF}
510 kΩ
510 kΩ
S-8209B
(3) CB3
CTLC3
CTLD3
VSS3
BAT3
470 Ω
P−
1 MΩ
1 MΩ
Figure 16
Caution 1. The above constants may be changed without notice.
2. The example of connection shown above and the constant do not guarantee proper operation.
Perform thorough evaluation using the actual application to set the constant.
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