S-8215AAA-K8T2U Datasheet, PDF (15/29 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK

BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK (SECONDARY PROTECTION)
Rev.2.3_02
S-8215A Series
 Battery Protection IC Connection Examples
1. 5-serial cell
SC PROTECTOR
BAT1
BAT2
BAT3
BAT4
BAT5
R_VDD
C_VDD
R1
C1
R2
C2
R3
C3
R4
C4
R5
C5
VDD
VC1
VC2
S-8215A
Series
VC3
VC4
CO
VC5
VSS
EB+
FET
D_P
EB−
Figure 13
Table 8 Constants for External Components
No.
Part
Min.
Typ.
Max.
Unit
1
R1 to R5
0.5
1
10
kΩ
2
C1 to C5, C_VDD
0.01
0.1
1
μF
3
R_VDD
50
100
500
Ω
Caution
1. The above constants are subject to change without prior notice.
2. 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.
3. R1 to R5 should be the same constant. C1 to C5 and C_VDD should be the same constant.
4. Set R_VDD, C1 to C5, and C_VDD so that the condition (R_VDD) × (C1 to C5, C_VDD) ≥ 5 × 10^−6 is satisfied.
5. Set R1 to R5, C1 to C5, and C_VDD so that the condition (R1 to R5) × (C1 to C5, C_VDD) ≥ 1 × 10^−4 is
satisfied.
6. Since the CO pin may become detection status transiently when the battery is being connected,
connect the positive terminal of BAT1 last in order to prevent the three terminal protection fuse
from cutoff.
15