s-8243b Seiko Instruments Inc., s-8243b Datasheet - Page 19

• Manufacturer Part Number: s-8243b
• Description: Battry Protection Ic For 3-serial Or 4-serial Cell Pack
• Manufacturer: Seiko Instruments Inc.

Rev.2.5
1. Overcharge detection, Over discharge detection
Timing Charts
*1. State depends on CTL3 and CTL4 input levels. Refer to Figure 9.
Charger connected
Load connected
*2. <1>: Normal mode, <2>: Overcharge mode, <3>: Overdischarge mode
Remark The charger is assumed to charge with a constant current. V
VBATOUT pin
voltage
VREG pin votage
Mode
Battery voltage
DOP pin voltage
COP pin voltage
VMP pin voltage
*2
_00
*1
(n = 1 to 4)
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
EB
DD
CUn
CLn
DUn
DLn
DD
SS
SS
IOV1
SS
OUT
BAT
SS
DD
OUT
SS
+
BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL CELL PACK
<1>
Overcharge detection
delay time (t
Seiko Instruments Inc.
CU
High-Z
)
<2>
Figure 6
<1>
Overdischarge detection
EB
delay time (t
+ indicates the open voltage of the charger.
DL
)
High-Z
<3>
S-8243A/B Series
<1>
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