S-8204AAB-TCT1Y Datasheet, PDF (23/34 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

Rev.3.5_00
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204A Series
Table 10 Constants for External Components (Circuits in Figure 12, Figure 13)
Symbol
Min.
Typ.
Max.
Unit
R_VC1^*1
R_VC2^*1
R_VC3^*1
R_VC4^*1
0.51
1
0.51
1
0.51
1
0.51
1
1
kΩ
1
kΩ
1
kΩ
1
kΩ
R_DOP
2
5.1
10
kΩ
R_COP
0.1
1
1
MΩ
R_VMP
1
5.1
10
kΩ
R_CTLC
1
1
10
kΩ
R_CTLD
1
1
10
kΩ
R_VINI
1
1
10
kΩ
R_SEL
1
1
100
kΩ
R_SENSE
R_VSS^*1
C_VC1^*1
C_VC2^*1
C_VC3^*1
C_VC4^*1
0
−
−
mΩ
22
47
100
Ω
0
47
100
nF
0
47
100
nF
0
47
100
nF
0
47
100
nF
C_CCT
0.01
0.1
−
μF
C_CDT
0.01
0.1
−
μF
C_CIT
C_VSS^*1
0.01
0.1
−
μF
0
1
2.2
μF
Pch FET1
−
−
−
−
Pch FET2
−
−
−
−
*1. Set up a filter constant to be R_VSS × C_VSS = 47 μF • Ω and to be R_VC1 × C_VC1 = R_VC2 × C_VC2 = R_VC3 × C_VC3
= R_VC4 × C_VC4 = R_VSS × C_VSS.
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 47 μF • Ω.
e.g., C_VSS × R_VSS = 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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