S-8205AAA-TCT1U Datasheet, PDF (24/33 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

BATTERY PROTECTION IC FOR 4-SERIES OR 5-SERIES CELL PACK
S-8205A/B Series
Rev.1.9_00
Table 9 Constants for External Components
Symbol
Min.
Typ.
Max.
Unit
R_VC1^*1
R_VC2^*1
R_VC3^*1
R_VC4^*1
R_VC5^*1
0.47
1
0.47
1
0.47
1
0.47
1
0.47
1
1
kΩ
1
kΩ
1
kΩ
1
kΩ
1
kΩ
R_DO
1
5.1
10
kΩ
R_CO
0.1
1
1
MΩ
R_VM
3
5.1
10
kΩ
R_CTLC
0.1
1
1
kΩ
R_CTLD
0.1
1
1
kΩ
R_VINI
0.1
1
1
kΩ
R_SENSE
R_VDD^*1
C_VC1^*1
C_VC2^*1
C_VC3^*1
C_VC4^*1
C_VC5^*1
0
−
−
mΩ
43
100
100
Ω
0.068
0.1
1
μF
0.068
0.1
1
μF
0.068
0.1
1
μF
0.068
0.1
1
μF
0.068
0.1
1
μF
C_CCT
0.01
0.1
−
μF
C_CDT
0.01
0.1
−
μF
C_CIT
C_VDD^*1
0.02
0.1
−
μF
0
1
10
μF
*1. Set up a filter constant to be R_VDD × C_VDD = 68 μF•Ω or more, and to be R_VC1 × C_VC1 = R_VC2 × C_VC2 = R_VC3 ×
C_VC3 = R_VC4 × C_VC4 = R_VC5 × C_VC5 = R_VDD × C_VDD.
Caution 1. The above constants may be changed without notice.
2. It is recommended that filter constants between VDD pin and VSS pin should be set approximately
to 100 μF•Ω.
e.g., C_VDD × R_VDD = 1.0 μF × 100 Ω = 100 μF•Ω
Sufficient evaluation of transient power supply fluctuation and overcurrent protection function with
the actual application is needed to determine the proper constants. Contact our sales office in case
the constants should be set to other than 100 μF•Ω.
3. It has not been confirmed whether the operation is normal or not in circuits other than the example
of connection. In addition, the example of connection and the constant do not guarantee proper
operation. Perform thorough evaluation using the actual application to set the constant.
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