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| S-8243AACFT-TB-X Datasheet, PDF (19/35 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC | |||
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Rev.3.1_00
BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL CELL PACK
S-8243A/B Series
ï® Timing Charts
1. Overcharge detection, Overdischarge detection
VCUn
VCLn
Battery voltage
VDUn
VDLn
(n = 1 to 4)
VDD
DOP pin voltage
VSS
VEB+
COP pin voltage
VMP pin
voltage
VSS
VDD
VIOV1
VIOV3
VSS
High-Z
High-Z
VBATOUT pin
voltage*1
VOUT
VBAT
VSS
VDD
VOUT
VREG pin voltage
VSS
Charger connected
Load connected
Status*2
Overcharge detection
delay time (tCU)
Overdischarge detection
delay time (tDL)
<1>
<2>
<1> <3>
<4>
<1>
*1. State depends on CTL3 and CTL4 input levels. Refer to Figure 9.
*2. <1>: Normal status, <2>: Overcharge status, <3>: Overdischarge status, <4>: Power down status
Remark The charger is assumed to charge with a constant current. VEB+ indicates the open voltage of the charger.
Figure 6
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