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BQ24703: Inquiries regarding ACDET / ACPRES Pin

JAEHO CHOI
Prodigy 70 points
Part Number: BQ24703

Tool/software:

Hello, I have a question.

I don't want to use ACDRV and BATDRV, I just want to use PWM control.

1) To disable ACDET and ACPRES Pin on BQ24703 IC, is it GND or Floating?

2) If disable, what are the possible problems?

3) If ACDET and ACPRES voltage are the same level as 5V, will PWM be disabled?

Thank you.

  • 0
    TI__Mastermind 33041 points

    Hello JAEHO,

    JAEHO CHOI said:
    1) To disable ACDET and ACPRES Pin on BQ24703 IC, is it GND or Floating?

    ACDET-  Not capable of being disabled, Has to be pulled higher than ACPRES. If ACDET is float or tied to GND, the device will be in sleep mode and convertor will be off. So ACDET has to be pulled high to adapter.

    ACPRES- Can be left floating.

    JAEHO CHOI said:
    2) If disable, what are the possible problems?

    ACDET, not capable of being disabled.

    JAEHO CHOI said:
    3) If ACDET and ACPRES voltage are the same level as 5V, will PWM be disabled?

    yes, that is correct

    Best Regards,

    Christian