Vbias of LDO

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Discussion in 'General Electronics Chat' started by Pitsa, Aug 19, 2011.

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Aug 19, 2011 #1

Pitsa Thread Starter New Member

Aug 18, 2011

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I have question about Vbias of some LDO. in the gerneral idea what is the benefit of Vbias? efficiency improvement or control purpose?

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Aug 19, 2011 #2

SgtWookie Expert

Jul 17, 2007

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Vbias is what powers the control circuit of the LDO regulator.
Without Vbias, the regulator won't work.

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Aug 19, 2011 #3

iONic AAC Fanatic!

Nov 16, 2007

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I didn't know that. Good question Pitsa and nice answer Sgt.

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Aug 19, 2011 #4

#12 Expert

Nov 30, 2010

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Yeah, it's kind of like, "What is the benefit of gasoline in a car?" It won't run without gas (Vbias).

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