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Original question:

LM34919C-Q1: Tying EN directly to Vin

LM34919C-Q1: EN Pin Slowing down the startup

PG
Prodigy 70 points
Part Number: LM34919C-Q1

Tool/software:

Can a voltage divider (and/or with cap), be used on the EN pin to slow down when the LM34919C begins to wake up? I have a power supply that feeds into this one. I need to make sure it is up and stable before the LM34919C begins to wake up.

  • 0
    TI__Mastermind 39820 points

    Hello PG,

    Yes, you can delay the time the EN engages when the VIN voltage is at the appropriate level to start up.  Be aware that when VIN drops there will be a delay to turn off, you can remove the turn off delay by placing a diode pointing to VIN such that when VIN falls it discharges the enable capacitor.

    Hope this helps

    David.