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Original question:

BQ24298: Could power supply connected to VBAT damage VSYS output?

BQ24298: question 5

marcos rodrigues
Prodigy 20 points
Part Number: BQ24298

Hi, I'm using the BQ24298 CI of power management for a USB port. When I connect VBUS = 5.05v, V_SYS is around 1.34V. Occasionally I made a short circuit between REGN and SW, and the V_SYS went to 4.42v, but when I restart the V_SYS process back to 1.34v. Could help me understand what's going on. Thank you  .

  • 0
    TI__Guru 52371 points

    Hi,

    Referring to page 8 of the d/s, the input limit is set to 100mA when VSYS is below 2.2V. Please do not overload SYS before VSYS reaches 2.2V.

    Thanks,

    Ning.

    Please click "This Resolved my issue" button if this post answer your question.