S-8253A SII [Seiko Instruments Inc], S-8253A Datasheet - Page 19

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

Rev.3.7
1. Overcharge Detection and Overdischarge Detection
Timing Chart
*1. < 1 > : Normal mode
Remark The charger is assumed to charge with a constant current. V
Battery
voltage
DOP
pin voltage
COP
pin voltage
VMP
pin voltage
Charger
connection
Load
connection
Mode
_00
< 2 > : Overcharge mode
< 3 > : Overdischarge mode
*1
(n = 1 to 3)
V
V
V
V
V
V
V
V
V
V
V
0.8 V
V
CUn
CLn
DUn
DLn
DD
SS
EB+
SS
EB+
DD
IOV1
SS
BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK
< 1 >
Overcharge detection
delay time ( t
V
HC
V
HD
Seiko Instruments Inc.
High-Z
< 2 >
CU
)
Figure 11
Overdischarge detection
< 1 >
delay time ( t
EB+
indicates the open voltage of the charger.
DL
High-Z
< 3 >
)
S-8253A/B Series
< 1 >
19