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BQ24703 behaviour when [ BATDEP AND NOT(ACPRES) ]

Enrico Galletti
Prodigy 130 points
Other Parts Discussed in Thread: BQ24703

Hi, I am looking for information about the exact functioning of BQ24703 when the BATDEP condition is active.

The datasheet tells "The bq24703, however, automatically reverts over to adapter power, provided the adapter is present, during a deep discharge state."

What does it mean "Provided the adapter is present" ?

My problem is to understand which is the behaviour of the controller when: (battery is depleted) AND (ACPRES is low). In other words, if the battery goes depleted while the AC adapter is not present the battery is disconnected to preserve its life or is it left connect giving priority to load supply ?

Best regards

Enrico

  • 0
    Prodigy 130 points

    Hi,

    I have just experimentally checked using the EVM that when the "AC adapter" is not present the battery is left connected to to load even if it goes depleted. So load supply has priority over prevention of battery over-discharge.

    Regards

    Enrico