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TLV271: Vulnerability to supply reverse polarity

Alex Pogossov
Prodigy 150 points
Part Number: TLV271

Tool/software:

Hello,

By accident I applied about -8V (reverse polarity) of supply voltage to TLV271 (in SOT-23-5 package), and it did not seem to have been damaged. It was not getting hot either. Can it be assumed that it has not been damaged and is tolerant to such conditions? Perhaps it does not have any distinct low impedance clamping diode structures across the supply rails. Comments would be appreciated.

Regards, Alex

  • 0
    Guru 317320 points

    Some characteristics might have been degraded. There is no longer any guarantee.

  • 0 in reply to Clemens Ladisch
    Prodigy 150 points

    Yes, Clemens, even though performance might have degraded, it appears to be working (in a given application) as expected. I was curious, why it did no just burn out in a second with possibly several amps flowing in reverse, but survived for about 20 seconds seemingly undamaged...

  • 0 in reply to Alex Pogossov
    TI__Guru* 77521 points

    Hi Alex, 

    Alex Pogossov said:
    I was curious, why it did no just burn out in a second with possibly several amps flowing in reverse, but survived for about 20 seconds seemingly undamaged...

    The table below is the Absolute Max. Ratings in the op amp. When the abs. max. ratings are exceeded, it is called EIPD, which it stands for Externally Induced Potential Damage.  However, the potential damage may not occur instantly, unless the imposed voltage, current, temperature and/or other induced factors are exceeded the Si die's design margins.   The design margins refer to the built-in tolerances and safety factors that ensure robust performance despite process variations, voltage/current spikes, temperature changes etc.. 

    Based on your description, I would not use for your application or project. 

    Best,

    Raymond

    .