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REG103-A Error Flag pin tolerance

Michael W
Expert 3260 points

I am curious about the REG103UA-A and its ERROR Flag pin.  The datasheet states that it falls low when the expected output voltage is "approximately" 10% (above or below) out of tolerance.  However, the datasheet does not state any electrical specifications on this tolerance, given input voltage and temperature.  It only states "approximately".

For example, if the ERROR flag falls low when the output is within +/-10% at room temperature, what is it at-40 deg C?  Is it +12/-8%?  Or something else?  And is it truly +/-10% at room temperature?

I am trying to properly characterize this specification, as we are using it to alert the rest of our system when the output voltage is out of tolerance. 

Other things that may be pertinent: Input voltage 3.3V (filtered).  Adjustable output voltage setto 2.5V.

  • 0
    TI__Expert 3260 points

    I recently received the following response:

    "The tolerance of this electrical parameter is not specified.  It is intended to be a gross error condition.  The customer might want to consider using one of our SVS products to perform this function.  The SVS products are fully characterized and the datasheet provides specified trip levels over temperature."

    I'm just looking for verification, as well as maybe some additional information on the characterization data, if available. Many thanks!