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LDO question

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hithesh123:
I just saw EEVlog on Linear vs. switching.
I don't understand why the drop out voltage is less when using a PNP pass element vs NPN.

NPN drop is Vce sat + diode drop, but PNP drop is just Vce sat? Can someone explain please.

Jimmy:
the n-type has a surplus of electrons, the p-type has holes where electrons should be

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