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Author Topic: LDO question  (Read 2268 times)

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Offline hithesh123Topic starter

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LDO question
« on: March 06, 2011, 07:53:54 am »
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.
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Offline Jimmy

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Re: LDO question
« Reply #1 on: March 06, 2011, 08:47:54 am »
the n-type has a surplus of electrons, the p-type has holes where electrons should be
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