S-8204B Seiko, S-8204B Datasheet - Page 19

• Manufacturer Part Number: S-8204B
• Description: BATTERY PROTECTION IC
• Manufacturer: Seiko

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Rev.2.1
1. Overcharge Detection and Overdischarge Detection
Timing Chart (in the circuit in Figure 10)
*1. <1> : Normal status
Remark The charger is assumed to charge with a constant current. V
VMP pin voltage 1/2×V
_00
Charger connection
<4> : Power-down status
<2> : Overcharge status
<3> : Overdischarge status
DOP pin voltage
COP pin voltage
Status
Load connection
Battery voltage
charger.
39/40×V
*1
(n = 1 to 4)
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
V
V
V
V
V
V
V
V
V
CUn
CLn
DLn
DD
SS
DD
EB-
DD
DD
SS
DD
<1>
Overcharge detection
delay time (t
Seiko Instruments Inc.
CU
High-Z
<2>
)
Figure 8
<1>
Overdischarge detection
delay time (t
<3>
EB-
indicates the open voltage of the
DL
)
<4>
S-8204B Series
<1>
19