S-8204BAB-TCT1Y Datasheet, PDF (26/36 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
3. 8-series cell (cascade connection with overcurrent protection function)
EB+
M4
R1
1 COP
2 VMP
CTLC 16
CTLD 15
R_CTLC
RCTLD
RINV2
R_IFC
3 DOP
VDD 14
R2
RIFD
RVINI1
4 VINI
VC1 13
S-8204B
5 CDT ₍₁₎ VC2 12
6 CCT
VC3 11
CVC1
CVC2
CCCT1
7 CIT
VC4 10
CVC3
C_CDT1
8 SEL
VSS 9
CVC4
RCIT1
RSEL1
RVDD1
RVC1
RVC2
RVC3
RVC4
CVDD1
M1
M3
RATL
ZD1
RINV1
M2
CCDT2
CCCT2 ^CCIT2
1 COP
CTLC 16
2 VMP
CTLD 15
3 DOP
VDD 14
4 VINI _S-8204B VC1 13
5 CDT (2) VC2 12
6 CCT
VC3 11
7 CIT
VC4 10
8 SEL
VSS 9
CVC5
C_VC6
CVC7
C_VC8
R_SEL2
RVDD2
RVC5
RVC6
RVC7
RVC8
CVDD2
D_COP
REB_−
RCOP
RDOP
RVINI2
RSENSE
EB−
Charge FET Discharge FET
Figure 13
Caution 1. 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.
2. 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.
Remark Refer to the application note for constants of each external component.
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