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  • LM3464 Dynamic headroom control

    Other Parts Discussed in Thread: LM3464 In LM3464 datasheet page no.10 under subsection Operation Principles of DHC, it is written that when all the output channels are in regulation and the forward voltage of any LED string decreases due to temperature…
    • Answered

  • RE: OPA549: Current Increasing by using pararell 2 OPA549

    Resolved
    There are LED drivers that just control external current sinks or DC/DC regulators, and where the specified current limit just indicates normal usage. It might be possible to scale up the current by using different components (i.e., smaller sense resistor…

  • Design guide/Design Appnote of LM3464 + LM5021 Reference design.

    Other Parts Discussed in Thread: LM5021 , LM3464 We want to design LED Driver board using LM3464 + LM5021 combination along with a Microcontroller for a load range of 50W to 100W. Can you share "Design guide" / "Design Appnote" of LM3464…

  • ISSUES WITH LM3464 FOR 4 CHANNELS 700mA LED DRIVER

    Other Parts Discussed in Thread: LM3464 , TL431 , LM3466 We are using a power supply with output 40V x 3A and we have problems to adjust the current in 4 channels. Using only one channel we can adjust the current (700mA) and it stay stable, but when we increase…

  • LM3464 gate drive output control

    Other Parts Discussed in Thread: LM3464 Is there is a way to manipulate the LM3464 to phase shift the gate driver outputs so that all 4 strings of LEDs are not turned on/off at the same time? This would help create a constant current draw, rather than…

  • LM3464

    Other Parts Discussed in Thread: LM3464 Hello everybody, I am trying to design a led driver with lm3464 for street lighting. I need ac/dc power supply 100-150W, around 230V AC input and around 50V DC output. Does anybody know what is appropriate AC/DC…

  • LM3464 LM3464A Internal Fault Circuit Disable

    Other Parts Discussed in Thread: LM3464 I am using the LM3464 Eval board. I have it set up for 800ma channels, VIN=48VDC. I am using the DIM input to strobe the LEDs, completely off/on operation. The chip gets occasional faults, resulting in channels being…

  • LM3464

    Other Parts Discussed in Thread: LM3463 , LM3464 1) The DIM is to control all the LEDs. No option to DIM each LED separately. Correct? 2)Can we use with toal of 5A ?

  • Issue with LM3464 LED driver

    Hello, I'm working on a driver for 48 white LEDs (1 W each). I'm using 4 channels with 12 LEDs per channel, driven at 350mA. I'm also using the DHC feature by driving a 120W DC-DC step up converter. I use a microcontroller to dim the array via PWM.…
    • Answered

  • LM3464 DIM pin

    Resolved
    Dear all, Could you confirm me that this would be safe to permanently link the DIM pin (PIN #2) to the VCC output (PIN 13, 6.51Vout max) ? Only the absolute maximum ratings are specified for this PIN, which indicates 7V. I guess the input current of this…
    • Resolved

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