S-8205AAA-TCT1U Datasheet, PDF(19/33 Page) Seiko Instruments Inc

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S-8205AAA-TCT1U Datasheet, PDF (19/33 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

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Rev.1.9_00

BATTERY PROTECTION IC FOR 4-SERIES OR 5-SERIES CELL PACK

S-8205A/B Series

ï® Timing Chart

1. Overcharge Detection and Overdischarge Detection

VCUn

VCLn

Battery voltage

VDUn

VDLn

(n= 1 to 5)

VDD

DO pin voltage

VSS

VDD

CO pin voltage

VEB-

High-Z

VDD

VM pin voltage 1 / 5 Ã VDD

VSS

VEB-

Charger connection

Load connection

Status*1

(With power-down function)

Overcharge detection

delay time (tCU)

Overdischarge detection

delay time (tDL)

<1>

<2>

<1> <3>

<4>

<1>

Status*1

(Without power-down function)

<1>

<2>

<1>

<3>

<1>

*1. <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 10

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