S-8253A SII [Seiko Instruments Inc], S-8253A Datasheet - Page 20

• Manufacturer Part Number: S-8253A
• Description: BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK
• Manufacturer: SII [Seiko Instruments Inc]

20
BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK
S-8253A/B Series
2. Overcurrent Detection
*1.
Remark The charger is assumed to charge with a constant current. V
Battery
voltage
DOP
pin voltage
COP
pin voltage
Mode
VMP
pin voltage V
Load
connection
< 1 > : Normal mode
< 2 > : Overcurrent mode
*1
(n = 1 to 3)
V
V
V
V
V
V
V
V
V
V
V
V
CUn
CLn
DUn
DLn
DD
SS
EB+
SS
DD
IOV1
IOV2
IOV3
SS
Overcurrent detection
delay time 1 ( t
< 1 >
V
V
HC
HD
IOV1
Seiko Instruments Inc.
)
High-Z
< 2 >
Figure 12
Overcurrent detection
delay time 2 ( t
< 1 >
EB+
IOV2
indicates the open voltage of the charger.
High-Z
< 2 >
)
Overcurrent detection
delay time 3 ( t
< 1 >
< 2 >
High-Z
IOV3
)
Rev.3.7
< 1 >
_00