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  • LM3406: 2-Wire PWM Dimming Frequency

    Part Number: LM3406 Other Parts Discussed in Thread: TPS922052 , Tool/software: Hi Team, The Datasheet didn't mention any ratings for PWM Frequency of the Input 2-Wire PWM. May I know the minimum and maximum frequency?

  • LM3406: LM3406MHX/NOPB Stratification occurs within the device

    Part Number: LM3406 Dear We observed the internal structure of the material using an Acoustic Microscope and found the phenomenon of layering. Please refer to the image (marked A) Could you please help check if this is a defective product? Will it affect…

  • LM3406HV: Making LM3406 Adjustable

    TI Thinks Resolved
    Part Number: LM3406HV Other Parts Discussed in Thread: TPS92515 Due thte unavailabily of the TPS92151 we are trying to cope this situation installing a 5 turn trimmer in parallel to the sensing resistor in order to pick up a portion of voltage and send…
    • Answered

  • LM3406: Duty cycle

    Resolved
    Part Number: LM3406 Other Parts Discussed in Thread: TPS92641 , Hi, Why do the calculations in the LM3406 for buck duty cycle not include the efficiency estimate as they do with the TPS92641? They look like similar switching topologies, so I could use to…
    • Resolved

  • LM3406: Is there a better option to drive a simple 3x3 white LED array?

    Part Number: LM3406 Other Parts Discussed in Thread: TPS92515 , LM3405 , LM3409 Hello, I have a customer looking for a recommendation to drive a simple 3x3 white LED array. I did not find a lot of information on ti.com regarding how to drive basic white…

  • LM3406HV: LED-Driver DC/DC for Two Wire Dimming

    TI Thinks Resolved
    Part Number: LM3406HV Other Parts Discussed in Thread: LM3406 , TPS92515HV-Q1 Tool/software: We need to design a led-stripe with an input voltag from 19VDC to 48VDC and up to 80mA led-current. It should be possible to dim the led-strip with Two Wire Dimming…

  • 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?

    Part Number: LM3406 Other Parts Discussed in Thread: LM3409 , , TPS92515 , LM3402 I'm trying to develop an LED application that takes an input of 28V and outputs 25V/360mA. From my initial calculations in the datasheet, I've determined that a switching frequency…

  • LM3406: Unstable light level

    Part Number: LM3406 Hello team, Could you please help me to address the unstable light level issue with LM3406? Please find the internal link here for the waveforrm. (Please connect to VPN for download) The output current waveform varies into two different…
    • Answered

  • LM3406: Upgraded device

    Resolved
    Part Number: LM3406 Other Parts Discussed in Thread: TPS92512 , LM3409 Hello team, Could you please suggest me upgraded alternative for LM3406MHX/NOPB? Input voltage: >=32V Output current: >=2A PWM dimming is needed and PW signal level is 3.3V. I…
    • Resolved
    • Answered

  • LM3406: Difference in LED current waveform at PWM rise

    Resolved
    Part Number: LM3406 Hi, I would like to ask you a question about the LM3406. When checking the LED waveform while changing the VIN voltage, two types of LED waveforms are generated as shown in the figure below. This is the PWM Dimming waveform. Multiple…
    • Resolved

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