2 LDO outputs connected together by mistake on PCB

[jgk2004]

Hello all,

I have a mistake on my PCB board I just found today and its a problem of having two LDO both with a 1.2V output connected to each others output. I know this isn't a good idea but I can't simply disconnect one because the "short" is a mistake on my IC chip. I was trying to have two seperate VddA and VddD and in the IO ring they are connected due to a mistake.
My question is can two LDOs connected to each others outputs cause a large increase in noise? Also can it make the output unstable if changing loads are occurring?
Or is it totally OK to have two LDOs with the same output voltage?

Any help or info would be great!

JGK

 

[Zekeymonkey]

It will probably operate?? But, one of the LDO's will likely current hog. By this I mean one of them will carry more, if not all, of the current. I'd expect to see more noise due to the VddA and VddD being connected.