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BQ24703: Input voltage greater than 23V ACDRV high

Stefan Breitegger
Prodigy 10 points
Part Number: BQ24703

Hello,
if the input voltage of the BQ24703PW is above 23 volts (with no battery) the IC shuts down the transistor at the ACDRV pin. Why?
The resistor between GND and ACDET is 7k5 and the against input voltage is 100k. So it should start at around 18V.

  • 0
    TI__Genius 11850 points

    Hi Stefan,

    Thanks for your question. Can you please send your schematic?

    If possible, please also capture a waveform showing the input voltage, ACDET, /ACDRV, and ACPRES as the input voltage rises above 23 V and the input FET turns off.

    Best regards,

    Angelo