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LP5912: pull low resister of EN pin

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Prodigy 120 points
Part Number: LP5912

Hi ti,

   The EN pin of LP5912 is internally pulled low by a 3M resister to GND. Does this 3M pull low resister guarantee the LDO disable when leave EN pin float? Does a additional external pull low resister affect to normal EN pin?

   For power on sequencing purposes, LP5912 need to be disable before a valid EN trigger input. 

  • +1
    TI__Genius 12365 points

    Hello, 

    It is preferrable to GND the EN pin to ensure that the device remains disabled. In addition, this device also has an active discharge circuit on the output to ensure that OUT gets discharged. 

    Therefore, the device should remain disabled until there is 1.3V on the EN pin without any additional pulldown. 

    Best, 

    Edgar Acosta