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BQ24725A: Switch over time & method to measure charging status

Jomon
Intellectual 640 points
Part Number: BQ24725A

1. When switching from battery to adapter, BQ24725A might show a delay of 150ms and then 1.2s (changeable) as per the datasheet. How much time does it take to switch from adapter to battery when adapter turns off ?

2. Is there an option to measure input current or charging status or charging current using registers over SMBus ?

3. Can charging status and current only be read using ADC connected to IOUT pin of the IC ?

  • +1
    TI__Genius 13445 points

    Hello Jomon,

    Jomon said:
    1. When switching from battery to adapter, BQ24725A might show a delay of 150ms and then 1.2s (changeable) as per the datasheet. How much time does it take to switch from adapter to battery when adapter turns off ?

    It should be around the same time as the selected delay time of 150ms or 1.2s.

    Jomon said:

    2. Is there an option to measure input current or charging status or charging current using registers over SMBus ?

    3. Can charging status and current only be read using ADC connected to IOUT pin of the IC ?

    No, The BQ24725A does not have the capabilities to measure input current or charging status or charging current using registers over SMBus.

    This device would have to be paired with a battery guage for to measure these values. I do not support guages, I recommend creating a new thread asking for guage suggestions

    Best Regards,

    Christian.