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Showing 87 results View by: Thread Post Sort by
  • LM3421: Want to use the LM3421 at 100% output without dimming.

    MinKyu Kim
    MinKyu Kim
    Part Number: LM3421 Other Parts Discussed in Thread: LM3423 , LM3423BS2LYEV Tool/software: Hello, Ti teams. I intend to drive LEDs at 48 V and 1.2 A output via the LM3421 from a 24 V, 2.5 A input. The LEDs are connected in series (15 LEDs × 2.8 V…
    • 1 month ago
    • Power management
    • Power management forum
  • LM3421: Current

    Ning Li
    Ning Li
    TI Thinks Resolved
    Part Number: LM3421 Dears, Customer feedback that when they use the LM3421,then found the current is follow the voltage,attachfile is the schematic,pls kindly help to chekc it. Thanks
    • over 1 year ago
    • Power management
    • Power management forum
  • Answered
  • LM3421-Q1: the variance of continuous conduction switching frequency

    Shunsuke Yamamoto
    Shunsuke Yamamoto
    Resolved
    Part Number: LM3421-Q1 Other Parts Discussed in Thread: LM3421 Hi team, May I know the variance of continuous conduction switching frequency without Rt's variance and Ct's variance? Best regards, Shunsuke Yamamoto
    • Resolved
    • over 1 year ago
    • Power management
    • Power management forum
  • LM3421: LM3421-PWM dimming waveform

    switch
    switch
    Part Number: LM3421 Hi Ti Team, 1, I use LM3421 to do a step-down parallel dimming. Figure 1 is my test PWM dimming and main switching waveforms. Is the following figure normal? The schematic diagram is refer to Figure 2 Figure 1: Figure 2…
    • over 3 years ago
    • Power management
    • Power management forum
  • LM3421: Spice simulation of Boost Application

    miyoshi.masashi
    miyoshi.masashi
    Part Number: LM3421 Hi ti team, I tried to simulate the Boost Application circuit shown in the LM3421 datasheet but could not get a constant output. I am sending you the simulation file and the obtained I_LED trace. It would be helpful if you could…
    • over 2 years ago
    • Power management
    • Power management forum
  • LM3421: boost/buck LED controller to support common-anode laser R/G/B LEDs with time-division multiplexing mode

    Andrew Su
    Andrew Su
    TI Thinks Resolved
    Part Number: LM3421 Dears, I have an important customer who is looking for an LED controller that can provide boost/buck for common anode laser R/G/B. Specific requirements are as follows: 1. The input voltage is 5V 2. The output voltage of R/G/B…
    • over 1 year ago
    • Power management
    • Power management forum
  • Answered
  • LM3421-Q1: No current limit

    Ubiratan
    Ubiratan
    Resolved
    Part Number: LM3421-Q1 Other Parts Discussed in Thread: LM3421 Hi, In my board I have two identical circuits that uses LM3421. The intention is to power up two chains of HBLED separately or simultaneously. My circuit was based on the circuit showed…
    • Resolved
    • over 2 years ago
    • Power management
    • Power management forum
  • LM3421: What is the LM3421 max dimming ratio?

    Jiawei Hu1
    Jiawei Hu1
    TI Thinks Resolved
    Part Number: LM3421 Hi team, As the title, What is the LM3421 max dimming ratio? B.R Jiawei
    • over 4 years ago
    • Power management
    • Power management forum
  • LM3421-Q1: output triggering during startup

    Ubiratan
    Ubiratan
    TI Thinks Resolved
    Part Number: LM3421-Q1 Hi, I am using in a board the Boost driver circuit of the schematic showed here: https://1drv.ms/i/s!AhE6En32rx-MoJxQAjgxhmwvcS-G8w?e=F6BLIm There are two identical drivers sharing Vsystem bus. It is working fine but when I…
    • over 2 years ago
    • Power management
    • Power management forum
  • LM3421: LM3421 low ripple sulotion

    CS kk
    CS kk
    TI Thinks Resolved
    Part Number: LM3421 dear If there have LM3421 low ripple sulotion, such as sch or calculate inductance excel ?Thannks in advance~
    • over 4 years ago
    • Power management
    • Power management forum
>

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