most efficient and easily available led driver IC ?

Discussion in 'The Projects Forum' started by Arun., Jun 3, 2016.

  1. Arun.

    Thread Starter New Member

    Mar 28, 2016
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    please suggest a led driver IC similar to PT4115 which can handle more than 30 v and 1.2 amps with PWM dimming support
     
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    Please suggest a good red wine to go with an Angus beef tenderloin.
     
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  3. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    Welcome to AAC!
    Members here who are not in India are unlikely to know what would be 'easily available' to you in India. Can you source things by mail order from any of the major suppliers, such as Digikey, Element14, Mouser etc? If so, do a parameter search on their web-sites.
     
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  4. Arun.

    Thread Starter New Member

    Mar 28, 2016
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    Thanks . I already searched there , but what I need is some suggestion from experienced LED users .
     
  5. Arun.

    Thread Starter New Member

    Mar 28, 2016
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    wrong website :p
     
  6. Arun.

    Thread Starter New Member

    Mar 28, 2016
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    not again... making fun by trolling me ? I came here for help .not to get offended by racists. If you can't help then why don't keep your a***s off this thread ?
     
  7. dannyf

    Well-Known Member

    Sep 13, 2015
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    You may look into regular smps chips with on/off pins, Luke lm2596. That's assuming that you aren't pwmin this thing at too high of a frewuency.

    I recently documented repurposing a lm2596 modle as an LED driver - no own however, and. I can post my link for you later.
     
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  8. dannyf

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    Arun. likes this.
  9. Arun.

    Thread Starter New Member

    Mar 28, 2016
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    Thank you very much . this is very helpful and fast answer
     
  10. Arun.

    Thread Starter New Member

    Mar 28, 2016
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  11. crutschow

    Expert

    Mar 14, 2008
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    Kermit2 and Dodgydave, I don't understand your sarcastic responses to the op's question. :confused:
    Seems like a reasonable question to me.
    Some questions without any context do sometimes deserve a snarky answer but the op did post his basic requirements with sufficient info, I think, for a reasonable answer.
     
  12. dannyf

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    Sep 13, 2015
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    "There is no data about maximum output voltage from PT4115 in datasheets ."

    That's very difficult to believe.
     
  13. Papabravo

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    Feb 24, 2006
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  14. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    Eh? The first paragraph on the first datasheet that Google found says :-
    "The PT4115 is a continuous conduction mode inductive
    step-down converter, designed for driving single or
    multiple series connected LED efficiently from a
    voltage source higher than the total LED chain voltage.
    The device operates from an input supply between 6V
    and 30V and provides an externally adjustable output
    current of up to 1.2A."
     
  15. Arun.

    Thread Starter New Member

    Mar 28, 2016
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    But they mentioned about the input voltage , there won't be any voltage drop across the chip ? can I get 30 v output for 30v input ? :confused:
     
  16. dannyf

    Well-Known Member

    Sep 13, 2015
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    You can really benefit from reading the datasheet more. Pay particular attention to the topology.

    The concept of "output voltage" doesn't exist here. The chip doesn't work the way you think it does.
     
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