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  • TLVH431: Comparison of TLVH431 vs. LMV431

    TI Thinks Resolved
    Part Number: TLVH431 Other Parts Discussed in Thread: LMV431 , , LM431 I am doing a bench test comparison of the TLVH431CLPR versus LMV431 voltage shunt devices. The component test using the circuit below resulted in Vref = 1.24v and Vout = 2.5v as expected…

  • LMV431: Question about Figure 28 of the datasheet

    TI Thinks Resolved
    Part Number: LMV431 Hello, what is the purpose of the resistor across the LED in figure 28 on page 17 of LMV431 datasheet . Thx!
    • Answered

  • LMV431: Need help designing a cap discharge circuit

    Resolved
    Part Number: LMV431 Other Parts Discussed in Thread: TINA-TI , TL431LI Hello, I've played around with this and haven't come up with a good solution yet. I have a project that is battery powered (nominal 12V - 24V) but when the battery is removed I want…
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    • Answered

  • UCC28C42-Q1: Webench simulation of UCC28C42-Q1 using TL431 instead of LMV431

    Resolved
    Part Number: UCC28C42-Q1 Other Parts Discussed in Thread: LMV431 , TL431 , UCC28C42 Hi Team, We would like to ask your help regarding the customer's inquiry below. When I design the UCC28C42QDRQ1 with Webench the adjustable precision shunt regulator…
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    • Answered

  • LM5117: High voltage CC/CV configuration using LMV431 + Zener in series.

    Resolved
    Part Number: LM5117 Other Parts Discussed in Thread: LMV431 Hello, This is related to a previous question where it was suggested to use a zener in series with the LMV431 to increase the clamp voltage beyond the specifications of the LMV431 to 42V to allow…
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    • Answered

  • LMV431: Spice model that models .TRAN and .AC behavior

    Resolved
    Part Number: LMV431 Other Parts Discussed in Thread: TLVH431 Hi team, The available model for LMV431 seems to concentrate only on DC behavior. Is there an available Spice simulation model that models the correct .TRAN and .AC behavior? Thanks, Obinna. …
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    • Answered

  • LMV431: Pin compatible alternatives

    Resolved
    Part Number: LMV431 Team, My customer is looking to add a 2nd source alternatives to LMV431AIM5X/NOPB and LM4050BIM3-2.5/NOPB on the current design. We would be second sourcing ourselves in this case. So, question is - do we have pin compatible alternatives…
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  • RE: LM5117: Output voltage is lower than expected

    I got 43.3V and different kind of damaged waveform on SW node: Voltage on the REF pin of LMV431 is 2.18V, on the anode of the LMV431 is 1V and 0.5V on FB pin.

  • LMV431: LMV431 as error amplifier in flyback SMPS

    TI Thinks Resolved
    Part Number: LMV431 Hi people, I am using a shunt regulator as error amplifier in an isolated flyback supply. The hardware implementation removes the fast lane from the optocoupler. I haven't problems with stability but, at start up, I noticed a significative…
    • Answered

  • LM5117-Q1: SNVA829 Figure 3 FB pin voltage

    Resolved
    Part Number: LM5117-Q1 Other Parts Discussed in Thread: LMV431 , LM5117 I plan to implement a CC/CV regulator very similar to Figure 3 in SNVA829. One thing that I am concerned about is the absolute maximum voltage on the FB pin. From the Figure 3 schematic…
    • Resolved

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