Vbias of LDO

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

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  1. 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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  2. 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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  3. 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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  4. 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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