Diagnosing Power rail faults/ LTC1435 switching regulator

Discussion in 'General Electronics Chat' started by Johndon2000, Jul 3, 2013.

  1. Johndon2000

    Thread Starter New Member

    Jun 12, 2013
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    Hi, I'm looking for a simple way to determine if a switching regulator is faulty (specifically the LTC1435)... there aren't clearly defined inputs & outputs as there is a lot of feedback, so comparing inputs & outputs with a KTBG device doesn't seem to help.

    Basically, a 3.3V rail is showing as 2.9V and I suspect the LTC1435... obviously I can just swap it out but is there a more technical method for determining faulty devices for future reference?
     
  2. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
    1,758
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    Is this your own PCB or a commercial product you're trying to fix?
     
  3. Johndon2000

    Thread Starter New Member

    Jun 12, 2013
    25
    0
    Commercial
     
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