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Linear regulator supplied from noise line.

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ivenzar

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Hello,

If a 5v linear regulator is supplied by a 12 volts noisy line (the one that drives the mosfet gates), the regulator output will pick up that noise or it will be removed?

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Greetings
Ivenzar.
 

the output noise depends on the filter components in the regulator.
 
1.- Where can I find ripple rejection? https://www.onsemi.com/pub_link/Collateral/NCV4269-D.PDF

2.-If ripple rejection is OK. WHat about the noisy ground? Returns driving currents are on same ground as linear regulator. Will it affect? or will I have a clean regulated 5v line?
 
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