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  • LM3402 PWM dimming frequency and contrast can support the largest number?

    Other Parts Discussed in Thread: LM3402 Hi sir, LM3402 PWM dimming frequency and contrast can support the largest number? Specifications and why do not see? Also switching frequency can affect PWM dimming frequency feature?
    • Answered

  • LM3402 Vo vs Total Vf

    Resolved
    Other Parts Discussed in Thread: LM3402 Hi, I'm using the LM3402 to drive 10 ThorLabs near-infrared LED's in a series at 100mA, but had a question about the Vo of the device. Forgive my ignorance, but will there be any issues if the forward voltage of…
    • Resolved
    • Answered

  • LM3409: Output current & voltage are the same but somehow it's consuming more power in higher input voltages.

    Resolved
    Part Number: LM3409 Other Parts Discussed in Thread: LM3407 , LM3402 Hi all, I'm using LM3409 to drive 3 LEDs in 8.7V at 400mA. the driving schematics I was refering to the one in datasheet (Driving pin is EN), It's basically identical except the…
    • Resolved

  • Is the LM3402 Suitable for fast PWM dimming with a FET in parallel with the LEDs?

    Other Parts Discussed in Thread: LM3402 , LM3406 Hello, When i look at the datasheet of the LM3406 i see that it is possible to dim the LEDs by connecting a FET in parallel with the LEDs. Is it safe to do the same with the LM3402 if you choose a big enough…

  • LM3401, LM3402, LM3404, LM3406 ltspice models

    Other Parts Discussed in Thread: LM3401 , LM3404 I want to run a simulation on the LM3401, 3402, 3404 or 3406 LED driver using a modified reference design (additional components). I downloaded Orcad Lite & Pspice V16.6 but, unfortunately, the lite version…

  • Multiple LM3402 Switch Mode LED drivers will cause EMC problem?

    Other Parts Discussed in Thread: LM3402 Hello, We wish to use multiple LM3402 LED drivers to light 30 red LEDs from the 12V car battery rail. So we wish to use 10 LM3402 based buck led drivers, each LM3402 driving 3 red LEDs. They will all be next to each…

  • LM3404EVAL: AN-1839 LM402/LM3404 Fast Dimming/ True Constant LED Current Eval Board issues

    Part Number: LM3404EVAL Other Parts Discussed in Thread: LM3404 , LM3402 Hi Experts, Seeking your assistance please. I am posting this on behalf of Gregory, a customer using LM3404EVAL: Using your AN-1839 LM402/LM3404 Fast Dimming/ True Constant LED Current…

  • LM3402 Ripple

    Other Parts Discussed in Thread: LM3402 I made a LED driver with LM3402, to source 500mA to 2 HB LEDs (6,8V), with a 24V input. It's working properly with an 47uH Inductor, and a Output Capacitor of 220nF. Providing about 5% ripple current. In order…

  • LM3402 minimum current?

    Hello, We have a low current LED application. Can this supply run at light load under 10mA, or is there a minimum current? Thanks, Eric

  • RE: LM3406: Can I drive an LED string with a 25V drop from a 28V input with this driver, or do I need a large input voltage?

    Hello Alexander, So are you looking at theLM3406 (original post) or the LM3402 (last post)? Calculating Fsw between the two it looks like the LM3402? Breadboarding this circuit requires knowledge of how the circuit works. The current sense is particularly…

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