S-8204BAB-TCT1Y Datasheet, PDF (24/36 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series
Rev.3.9_00
Table 10 Constants for External Components (Circuit in Figure 11)
Symbol
Min.
Typ.
Max.
Unit
R_VC1^*1
R_VC2^*1
R_VC3^*1
R_VC4^*1
R_DOP
R_COP
R_VMP
R_CTLC
R_CTLD
R_VINI
R_SEL
R_VDD^*1
C_VC1^*1
C_VC2^*1
C_VC3^*1
C_VC4^*1
C_CCT
C_CDT
C_VDD^*1
C_CIT
R_SENSE
M1
0.51
1
1
kΩ
0.51
1
1
kΩ
0.51
1
1
kΩ
0.51
1
1
kΩ
2
5.1
10
kΩ
0.1
1
1
MΩ
1
5.1
10
kΩ
1
1
10
kΩ
1
1
10
kΩ
1
1
10
kΩ
1
1
100
kΩ
22
47
100
Ω
0
47
100
nF
0
47
100
nF
0
47
100
nF
0
47
100
nF
0.01
0.1
−
μF
0.01
0.1
−
μF
0
1
2.2
μF
−
0.1
−
μF
−
−
−
−
−
−
−
−
M2
−
−
−
−
Z_D1
R_EB−
R_ATL
Nch FET1
−
−
−
−
−
1
−
MΩ
−
20
−
MΩ
−
−
−
−
Nch FET2
−
−
−
−
*1. Set up a filter constant to be R_VDD × C_VDD = 47 μF • Ω or more, and to be R_VC1 × C_VC1 = R_VC2 × C_VC2 =
R_VC3 × C_VC3 = R_VC4 × C_VC4 = R_VDD × C_VDD.
Caution 1. The above constants may be changed without notice.
2. It is recommended that filter constants between the VDD pin and the VSS pin should be set to
approximately 47 μF • Ω.
e.g., C_VDD × R_VDD = 1.0 μF × 47 Ω = 47 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 47 μF • Ω.
3. It has not been confirmed whether the operation is normal in circuits other than the above example
of connection. In addition, the example of connection shown above and the constants do not
guarantee proper operation. Perform thorough evaluation using an actual application to set the
constant.
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