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  • LM3421: Current

    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

  • LM3421: boost/buck LED controller to support common-anode laser R/G/B LEDs with time-division multiplexing mode

    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 3…
    • Answered

  • LM3421-Q1: the variance of continuous conduction switching frequency

    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

  • LM3421-Q1: output triggering during startup

    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 turn ON…

  • LM3421: Spice simulation of Boost Application

    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 point…
    • Answered

  • RE: LM3421-Q1: No current limit

    Resolved
    If so, LM3421 should be the good solution.

  • LM3421: LM3421T PWM dimming problem

    TI Thinks Resolved
    Part Number: LM3421 Other Parts Discussed in Thread: LM3409 , TPS92641 Hi ti team, My client uses LM3421 for BUCK circuit.H ave the following problem. 1,Stroboscopic problems occur with PWM Dimming,Analog Dimming is normal,Please help to analyze the reason…

  • LM3421: Possible RT8480 equivalent

    TI Thinks Resolved
    Part Number: LM3421 Other Parts Discussed in Thread: TPS92692 , TPS92691 Hi Team, I found no direct TI equivalent for RT8480 in our Tool. Can you help confirm if LM3421 could be a possible solution? In my initial checking, I find it ok. Thank you. Regards…

  • LM3421: LM3421-PWM dimming waveform

    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, 2,There…

  • LM3421: How to deal with Dim Signal

    TI Thinks Resolved
    Part Number: LM3421 Is there a EVM for LM3421 buck application？ If I only use PWM control,how to deal with Dim signal? Our LED voltage is 7.3V,current 16A,is LM3421 suitable for our LED? Thanks!

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