LP2985: What would be the effect of BYP pin shorted to ground?

Part Number: LP2985

I'm wondering what would be the effect of BYP pin of LP2985 shorted to ground (e.g. failure mode of connected capacitor)?

  • Hi Lukasz,

    I checked this on the bench and when the BYP pin is connected to GND the reference voltage cannot get all the way to its target and the output sits at some intermediate value. In my test case I used a 3.3V fixed-output device with VIN = 5V and I measured VOUT = 1.49V. The device is not destroyed in this failure mode - upon removing the short the device works normally.

    Regards,

    Nick

  • Thank you very much, I this is exactly what I needed, to know if this failure will be "safe".