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TPS717 / Absolute Maximum Rating of enable pin

S.Satoshi
Guru 21685 points

Hi,

Please let me clarify my understanding about abs max of enable pin. "VEN absolute maximum rating is VIN + 0.3 V or 7 V, whichever is greater." means that there is no possibility of damage on enable pin when applying up to 7V on enable pin without VIN (VIN=0V). Is my understanding correct?

In particular, my customer is concerning if 3.3V can be applied on enable pin before VIN.

Best Regards,

Sonoki / Japan Disty

  • 0
    Guru 21685 points

    Hi,

    I found the following comment in page 5.

    "(4) Maximum VEN(high) = VIN + 0.3 or 6.5 V, whichever is smaller."

    So I guess that the note 2) of Abs max has typo and it should be "smaller", not greater. Please give your opinion.

    Best Regards,

    Sonoki

  • 0 in reply to S.Satoshi
    TI__Guru 55940 points

    Sonoki-san,

    You are correct there is a typo.  Please limit Ven to Vin + 0.3 or 6.5V (whichever is smaller) in order to remain within the operating range of the device.

    Very Respectfully,

    Ryan

  • 0 in reply to Ryan Eslinger
    Guru 21685 points

    Hi Ryan,

    Thank you for your response. Please see my comment as below.

    1. Please request to revise datasheet to correct this typo.
    2. I understand that the recommended should be "Vin + 0.3 or 6.5V whichever is smaller" and abs max should be "Vin + 0.3 or 7V whichever is smaller". Is my understanding correct?

    Best Regards,

    Sonoki