S-8243AACFT-TB-G Просмотр технического описания (PDF) - Seiko Instruments Inc
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S-8243AACFT-TB-G Datasheet PDF : 35 Pages
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BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL CELL PACK
S-8243A/B Series
Rev.3.1_00
2. Overcurrent detection
VCU
VHC
Battery
VCL
voltage
VDU
VDL
VHD
DOP pin
voltage
COP pin
voltage
VMP pin
voltage
VDD
VSS
VEB+
VSS
VDD
VIOV1
VIOV2
VIOV3
VSS
VRETURN*1
High-Z
High-Z
High-Z
VOUT
VBATOUT VBAT
pin voltage*2
VSS
VDD
VREG pin
voltage
VOUT
VSS
Charger connected
Load connected
Status*3
Overcurrent detection
delay time 1 ( tIOV1)
<1>
<2>
Overcurrent detection
delay time 2 ( tIOV2)
<1>
<2>
Overcurrent detection
delay time 3 ( tIOV3)
<1> <2>
<1>
*1. VRETURN = VDD / 6 (typ.)
*2. State depends on CTL3 and CTL4 input levels. Refer to Figure 9.
*3. <1>: Normal status, <2>: Overcurrent status
Remark The charger is assumed to charge with a constant current. VEB+ indicates the open voltage of the charger.
Figure 7
20
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