Diagnosing Power rail faults/ LTC1435 switching regulator

Thread Starter

Johndon2000

Joined Jun 12, 2013
31
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?
 
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