S-8243AACFT-TB-G Просмотр технического описания (PDF) - Seiko Instruments Inc

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S-8243AACFT-TB-G

BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL CELL PACK

Seiko Instruments Inc 

Rev.3.1_00

BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL CELL PACK

S-8243A/B Series

 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

19

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