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Possible Cranking Issue Solution - LM3478/LM3488

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  • Possible Cranking Issue Solution - LM3478/LM3488

    I just came around this IC at National's site LM3478/LM3488
    According to the datasheet it should solve all the problems around cranking.
    Please correct me if I'm wrong
    http://www.m2visio.de

    |-----------------------------
    |CAR ENTERTAINMENT SYSTEM
    |-----------------------------
    |Epia m10000 w. 256mb
    |20gb 2.5,slimDVD
    |Morex Cubid 3688+ITPS
    |Lilliput VGA+Touchscreen
    |-----------------------------

  • #2
    it only outputs 1A. The pt5071 is a better sollution with a output of 1,5A

    And the max1771 + extra mosfet gives 2A (like the sproggy MK3)
    Newbee, sorry for my bad english. lol
    Trying to built a carmp3 systeem

    own psu: max788, pt5071, pt5024

    Comment


    • #3
      Well, according to the WEBENCH Live Simulation it should manage 5A
      http://www.m2visio.de

      |-----------------------------
      |CAR ENTERTAINMENT SYSTEM
      |-----------------------------
      |Epia m10000 w. 256mb
      |20gb 2.5,slimDVD
      |Morex Cubid 3688+ITPS
      |Lilliput VGA+Touchscreen
      |-----------------------------

      Comment


      • #4
        Originally posted by numberone
        Well, according to the WEBENCH Live Simulation it should manage 5A
        hmm sorry, my bad.

        In the datasheet:
        first schema gives an output of 2A, but on a set-up way (and you need a setp-up step-down)

        and figure 12 is a step up and down

        So, you could use it, but it isn't the most easy way. Easiest way: pt5071, but quite expensive: around the $21. Request samples: free, and you will get them, I got 2 of them, tomorrow will number 3 arrive
        Newbee, sorry for my bad english. lol
        Trying to built a carmp3 systeem

        own psu: max788, pt5071, pt5024

        Comment


        • #5
          And where can I these free samples?
          http://www.m2visio.de

          |-----------------------------
          |CAR ENTERTAINMENT SYSTEM
          |-----------------------------
          |Epia m10000 w. 256mb
          |20gb 2.5,slimDVD
          |Morex Cubid 3688+ITPS
          |Lilliput VGA+Touchscreen
          |-----------------------------

          Comment

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