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  • LM3444 OffLine LED Driver

    Other Parts Discussed in Thread: LM3444 Hello All, I am trying to determine whether the LM3444 is suitable for driving a single LED (Vf about 3.4V) at about 5 amps. The efficiency will probably be low and that may be a factor for heat dissipation. Guess…

  • LM3444 schematic query

    Other Parts Discussed in Thread: LM3444 , LM3466 Hi, I need review on my schematic. Please help me on this. Here one schematic. There are two sections. Circuit-1 is taken from your application note snvu114a. I wanted to increase LED capacity to double.…
    • Answered

  • TPS92511: LED current lower than 150mA

    Resolved
    Part Number: TPS92511 Other Parts Discussed in Thread: LM3445 , LM3444 , LM3414HV Hi E2E, Good day! Can we set the LED current of this part lower than 150mA, specifically 40mA? Best regards, Franz
    • Resolved

  • RE: TPS92640: Do you have any reference design to use TPS92640 with about 400V output for many LED driving in series?

    Hello Kazuya, I would look at the LM3444 or LM3445 for a simple buck driver. There are some other parts, some supported by other groups such as the UCC28810/28811, or the TPS92075. Best Regards,

  • LM3445: Design Design aid for buck-boost configuration

    TI Thinks Resolved
    Part Number: LM3445 Other Parts Discussed in Thread: LM3447 , TPS92075 , LM3444 Team, Do we have any design aids for LM3445 buck-boost configuration? There is nothing on the TI web design program. I can’t select any Vin AC voltages less than 110VAC for any…
    • Answered

  • RE: TPS92075: Dimmer of TPS92075

    Resolved
    Hello Cristian, From your information I get four operating points, 10P/10S at 11W Vled = 28V is 393 mA, 8P/14S at 11W Vled = 39.2V is 281 mA, 15P/15S at 25W Vled = 42V is 595 mA, 16P/16S at 25W Vled = 44.8V is 558 mA. If you can use a valley fill for…
    • Answered

  • RE: LM3409HV: Vin=75V, VOUT=66V, Iout=3.5A

    Resolved
    Hello Julian, Running the LM3409HV at 75 volts input is possible but I would not recommend it. The ABS MAX on Vin is 76V, there's no margin for the design. The TPS92640/641 can run to 85V input giving some margin. You can also look at the LM3444/45…
    • Answered

  • RE: LED driver alternative to ZLED7001ZI1R

    Resolved
    Hello, We won't have anything pin for pin compatible however you could look at the LM3444/LM3445. It is a fairly simple part to use but will require something to generate VCC as can be seen in the datasheet and EVMs. Best Regards,

  • RE: LM3463: Common anode LED driver

    Hello Michael, LM3444 and LM3445 can be dimmed without a triac by adjusting the FILTER pin. Note that LM3444 and LM3445 regulate peak current so it will become non-linear dimming when it goes discontinuous. A lot of our led drivers are for lower power…
    • Answered

  • Looking for a suitable LED driver

    Resolved
    Other Parts Discussed in Thread: LM3445 , TL494 , LM3444 Hi sir, I am looking for a suitable LED driver, my design requirements is followed: input: DC 36-100v output: 300watts. It could be 30v@10A; or 48v@6.25A, or 30V/2A with 5 channels; or 48V/1.25A with…
    • Resolved

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