S-8243AACFT-TB-X Datasheet, PDF (23/35 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

Rev.3.1_00
BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL CELL PACK
S-8243A/B Series
 Battery Protection IC Connection Example
1. S-8243A Series
Discharging FET
Charging FET
RDOP
RCOP
RVC2
RVC3
RVSS
CVC2
CVC3
CVSS
RVMP
1 VDD
VREG 16
2 DOP
CTL1 15
3 COP
CTL2 14
4 VMP
CTL3 13
S-8243A
5 VC1
CTL4 12
6 VC2
VBATOUT 11
7 VC3
CCT 10
8 VSS
CDT 9
RCTL1
RCTL2
RCTL3
RCTL4
RVBAT
CCCT
CCDT
EB+
CTL1
CVREG
Microcomputer
EB-
Figure 10
Table 11 Constants for External Components
No.
Part
Typ.
Range
Unit
1
R_VC2
1
2
R_VC3
1
3
R_VSS
10
0.51 to 1^*1
kΩ
0.51 to 1^*1
kΩ
2.2 to 10^*1
Ω
4
R_DOP
5.1
2 to 10
kΩ
5
R_COP
1
0.1 to 1
MΩ
6
R_VMP
5.1
1 to 10
kΩ
7
R_CTL1
1
1 to 100
kΩ
8
R_CTL2
1
1 to 10
kΩ
9
R_CTL3
1
1 to 10
kΩ
10
R_CTL4
1
1 to 10
kΩ
11
R_VBAT
12
C_VC2
13
C_VC3
14
C_VSS
0
0.047
0.047
4.7
0 to 100
kΩ
0.047 to 0.22^*1
μF
0.047 to 0.22^*1
μF
2.2 to 10^*1
μF
15
C_CCT
0.1
More than 0.01
μF
16
C_CDT
0.1
More than 0.02
μF
17
C_VREG
4.7
0.68 to 10
μF
*1. Please set up a filter constant to be R_VSS × C_VSS ≥ 22 μF • Ω and to be
R_VC2 × C_VC2 = R_VC3 × C_VC3 = R_VSS × C_VSS.
Caution1. No resistance should be inserted in the power supply pin VDD.
2. The above constants are subject to change without prior notice.
3. It has not been confirmed whether the operation is normal or not in circuits other than the above
example of connection. In addition, the example of connection shown above and the constant will
not guarantee successful operation. Perform thorough evaluation using the actual application to set
the constant.
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