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  • LM3401: Designing with LM3401

    Resolved
    Part Number: LM3401 Other Parts Discussed in Thread: TPS922055 Hello Team, We are planning to use the LED Driver LM3401 for one of our applications. The datasheet and the user guide of the LM3401 seem to be straightforward so we can simply design the circuit…
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    • Answered

  • LM3401: Help customers find drivers suitable for multiple LEDs in series.

    Resolved
    Part Number: LM3401 Other Parts Discussed in Thread: LM3405 , LM3405A , LM3404 , LM3414 I am helping a customer to find a driver suitable for multiple LEDs in series. Usually 5 LEDs. The voltage of each LED is 2.5V-2.8V. Could you please help recommend suitable…
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  • LM3401: LM3401 not longer supported on WebBench?

    TI Thinks Resolved
    Part Number: LM3401 Other Parts Discussed in Thread: TPS92200 , I have older web-bench designs that I would like to review but it looks like the part is no longer support. Web-Bench is not available on the product page???
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  • LM3401: UL standard certification.

    Resolved
    Part Number: LM3401 Ｄear　Sir Thank you for your cooperation. Some of Kyocera's chemical products It has been announced that there was an inappropriate response to UL standard certification. LM3401MM / NOPB Please tell me if there is any influence…
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  • LM3401: Unstable Conditions above 15V

    Resolved
    Part Number: LM3401 Dear TI Forum I am having trouble with the LM3401 Board. It is working fine when <= 14.5V is applied. When Voltage is around 15V the LED is flickering and above 15.5V the LED is stable but Power is 50%. Red Probe = LED Volta…
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  • LM3401: LM3401 D = Vout-Vdiode what is Vdiode?

    Resolved
    Part Number: LM3401 Is the Vdiode in the data sheet talking about the total forward voltage of a string of LED's? It is not defined in the data sheet.
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  • LM3401: Efficiency at Vin=5V, 1 series LED 700mA

    Resolved
    Part Number: LM3401 Hi, can you tell me why the efficiency curve for LM3401 for 1 series LED (700mA) doesn't go down to Vin=5V but the 1A measurement does? Can you tell me the efficiency at that point? Thank you, Franz
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    • Answered

  • RE: LM3401: Same Design and BOM not working after 3 year gap

    Resolved
    Yes they are. Yesterday I was able to get the target board working with following values: L1 = 15uH @ 4.4 A R1 = .110 ohm R2 = 6.18K R3 = 130K This was the biggest error in Webench for the part.

  • LM3401: The method to reduce the noise of LM3401

    TI Thinks Resolved
    Part Number: LM3401 Hi My customer use LM3401 under Vin=10~24V, Vout=3.4V and Iout=1.4A. But when they evaluated LM3401 using EVM, there were the noise as attached document. Coukd you tell me to reduce it? I think I use the bypass capacitor from ILIM…

  • LM3401: Noise on Hys Pin

    TI Thinks Resolved
    Part Number: LM3401 Hi All, Seeing about ~20mv worth of noise on the hys pin of the lm3401. I'm thinking of filtering this pin with a capacitor to ground to try and eliminate the noise. Is this advisable? Regards, Jake

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