need some help in led lighting project...

Discussion in 'General Electronics Chat' started by Dimpi, Jan 17, 2014.

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  1. Dimpi

    Thread Starter Member

    Sep 6, 2013
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    sir,
    am working on a project of led lighting....
    after doing some research work now m using led driver(CS8902) which would be giving constant output current of around 1Amp..the mosfet is used to switch on and off purpose(correct me if i am wrong anywhere)..
    after calculation the total load current i require from each led driver is around 0.5 Amps..

    now i am having some fundamental probs like
    the attached pdf shows the n channel mosfet..how the specifications of the mosfet are to be decided????...

    I have connected the LD pin of the IC to the I2c pin of microcontroller for giving the control signal or linear dimming input to the led driver ic..is it correct???..

    i am using 4 different led drivers to drive 36 leds OF 1W EACH of red,green,blue,and white respectively(as arranged in the attached pdf)..so whether i need to use different control signals from micro to different led drivers(linear dimming input) or only 1 control signal would be sufficient from micro to all 4 led drivers..wat more m i missing.please suggest...
    thanks in advance..
     
    Last edited: Jan 17, 2014
  2. tracecom

    AAC Fanatic!

    Apr 16, 2010
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  3. Dimpi

    Thread Starter Member

    Sep 6, 2013
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    yes but there also i got no rply..so kindly help me with any kind of suggestions...
     
  4. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    One thread is enough.

    Bertus
     
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