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BQ24450 charging complete lamp signal?

JIN HO KIM
Prodigy 10 points

Hello everybody

I´m a new designer and i´m trying to implement the bq24450 in order to charge a lead acid battery 6V;6Ah.

I want to turn on the charging complement lamp. But which pins should I use?

I can't use the STAT2 pins. Because the pin is turned off VBAT-VBI.

Please let me know how to do it.

We are waiting for your reply.

Best Reagards,

  • 0
    TI__Intellectual 2295 points

    from the d/s, there's no special pin to indicate charge complete status for this lead-acid charger. STAT1/STAT2 are used to indicate the BUCK/BOOST/FLOAT as listed in pg7. We can take the FLOAT as charge complete and both STAT1 and STAT2 are OFF. There's detail application information start from pg8 of d/s.