bq24007

bq24008

SLUS479D − JANUARY 2001 − REVISED NOVEMBER 2004

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13

Yes

No

22.5 min Timer

Expired?

No

Yes

Indicate Fault

POR?

or

APG/THERM toggle?

Yes

No

Yes

Charge Timer

Expired?

No

Indicate Pre−

Charge

Regulate

I(PRECHG)

Indicate Charge

Regulate Current

or Voltage

Reset and Start

22.5 min Timer

POR

Reset All Timers,

Start Charge Timer

(TMR SEL Input)

No

Fault Condition

No

Yes

Indicate DONE

Turn Off Charge

Taper

Detected?

No

No

Yes

Yes

No

Yes

No

Yes

22.5 min Timer

Expired?

Yes

Yes

Indicate DONE

Start 22.5 min

Timer

or

POR?

or

APG/THERM Toggle?

Figure 14. Operational Flow Chart With the Charge Termination Timers Enabled (TMR EN = 0)