S-8254AANFT-TB-G Datasheet, PDF (18/29 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 3-SERIAL- OR 4-SERIAL-CELL PACK

BATTERY PROTECTION IC FOR 3-SERIAL- OR 4-SERIAL-CELL PACK
S-8254A Series
Rev.5.0_01
2. Overcurrent detection
V_CUn
V_CLn
V_HC
Battery voltage
V_DUn
V_DLn
(n = 1 to 4)
V_HD
V_DD
DOP pin voltage
V_SS
V_EB+
COP pin voltage
V_SS
High-Z
High-Z
High-Z
V_DD
V_IOV3
VMP pin voltage
V_SS
V_DD
VINI pin voltage
V_IOV2
V_IOV1
V_SS
Load connection
Overcurrent 1 detection
delay time (t_IOV1)
Status^*1
<1>
<2>
*1. < 1 > : Normal status
< 2 > : Overcurrent status
Overcurrent 2 detection Overcurrent 3 detection
delay time (t_IOV2)
delay time (t_IOV3)
<1>
<2>
<1> <2> <1>
Remark The charger is assumed to charge with a constant current. V_EB+ indicates the open voltage of
the charger.
Figure 10
18
Seiko Instruments Inc.