Electronics > Projects, Designs, and Technical Stuff

Is paralleling 3 LDO regulators a bad idea?

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Siwastaja:
The few linear regulator ICs that do support parallel operation do brag about it on the front page, obviously because it's a very good feature and worth some money.

Of course you can mill a screwdriver out of hammer...

LT1762 datasheet shows a peculiar paralleling example circuit ("Paralleling of Regulators for Higher Output Current") where input currents are measured using shunt resistors and the ADJ pin of the second regulator is fed back from the current mismatch. If you have an extra opamp lying around and can afford a bunch of extra passives, why not... But I wonder how many designers actually implement such "typical application" circuits.

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