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BQ25882: VBUS_UVLO falling.

Kengo.Y
Guru 11255 points
Part Number: BQ25882

Hi team.

I'd like to know about the VBUS_UVLO falling.
How much is the VBUS_UVLO falling threshold that determines the PG status?

Sincerely.
Kengo.

  • 0
    TI__Genius 10385 points

    Kengo,

    We do not warranty this parameter in the EC table, but from my observation in the lab I can see a typical value of 3.0V ranging to 3.3V. 

    I hope this resolves your issue,

    Ricardo

  • 0 in reply to Ricardo
    Guru 11255 points

    Hi team.

    Thank you so much for your quick reply.

    Do you have maximum value?

    And then could you tell me about VPOORSRC maximum value, too ?

    My customer wants to determine the threshold for PG.

    Sincelery.
    Kengo.

  • 0 in reply to Kengo.Y
    TI__Genius 10385 points

    The maximum falling threshold I observed was 3.3V. VPOORSRC is described in full detail in section 8.3.3.1 of the datasheet. VPOORSRC is typically 3.7V.

    The Power Good Indicator is described in section 8.3.9.1 and there are four conditions that must be met for PG to go low and the LED to indicate.

    1. VBUS above VVBUS_UVLOZ: we have discussed that for rising this is a typical value 3.3V as warrantied in the datasheet, for falling I observed a typical falling value of 3.0V but this is not warrantied in the datasheet.

    2. VVBUS_OV: rising and falling are described and warrantied in the EC table, please review this.

    3. VBUS must be above VPOORSRC (typical: 3.7V) when IPOORSRC (typical: 15mA) is drawn.

    4. Input Source Type Detection completed, please review section 8.3.3.2

    I hope I helped resolve your questions,

    Ricardo