Search tips
Showing 49 results View by: Thread Post Sort by

  • PMP9444: how the TRIM signal work? / part replacement LMZ31503 / schematic check?

    TI Thinks Resolved
    Part Number: PMP9444 Other Parts Discussed in Thread: UCD90120 , LMZ31503 , TPS84320 I have a project driving a Xilinx Ultrascale FPGA, and my design is referencing PMP9444 1. I see that UCD90120 have a GPIO TRIM signal connect to LMZ31503 with serial resistor…
    • Answered

  • LMZ31503: Internal inductor value

    Resolved
    Part Number: LMZ31503 Other Parts Discussed in Thread: LMZ31506 Please let me know about internal inductor value for LMZ31503. By the way, is LMZ31503 internal inductor value not same as LMZ31506? Best regards, Satoshi
    • Resolved
    • Answered

  • LMZ31503: PWRGD Behavior

    Resolved
    Part Number: LMZ31503 In the datasheet, there's a note that indicates PWRGD "is in a defined state once VIN is greater than 1.0V" (page 24) . We're using PWRGD to monitor the status of the output voltage by connecting this signal to a pull-up resistor…
    • Resolved
    • Answered

  • RE: LMZ31503 Simulation problem on Webench designer

    Resolved
    Hi Praveen, Nancy, Now I confirmed LMZ31503 Webench simulation and fixed. I appreciate your kind support. Best regards, Satoshi
    • Answered

  • LMZ31503: Relation for Cout and Coutx on Webench simulation

    Resolved
    Part Number: LMZ31503 When LMZ31503 simulate the bode plot on Webench with Cout: low ESR setting, waveform was unstable. Please see attached below (Cout: 100μF / 2mΩ ×2. Coutx: 47μF / 2mΩ ×4, fsw: 680kHz ) Webench link: …
    • Resolved

  • LMZ31503: PWRGD Recommended Pull-up Value

    TI Thinks Resolved
    Part Number: LMZ31503 Per section 9.7 on sheet 18 of the datasheet, the recommended pull-up resistor value is between 10K and 100K to a voltage source that is 5.5V or less. We're trying to use the PWRGD signal to turn on a status LED and noticed that…
    • Answered

  • LMZ31503: RRT: RT/CLK resistance calculation and accuracy

    Resolved
    Part Number: LMZ31503 Other Parts Discussed in Thread: LMZ31506 , I have question about RRT: switching frequency setting resister for LMZ31503 and LMZ31506, please see below. ①The below thread is described RRT accuracy is ±20%, but high fsw condition collision…
    • Resolved
    • Answered

  • LMZ31503: Higher Output Voltage

    Resolved
    Part Number: LMZ31503 Other Parts Discussed in Thread: LMZ31710 Hi team, The maximum output voltage of the LMZ31503 is 5.5V. Can I use it at 5.7V? Or can the output voltage be increased in the same way as the SNVA749? Best Regards,
    • Resolved
    • Answered

  • LMZ31503: INH/UVLO pin: internal pullup and adjustment sequence

    Resolved
    Part Number: LMZ31503 Other Parts Discussed in Thread: TPS54320 Please let me know about two points below for LMZ31503's INH/UVLO pin function; ・About internal pullup, below thread is described " The INH/UVLO has an internal pull-up to Vin ".…
    • Resolved
    • Answered

  • LMZ31506: PWRGD not enabling LMZ31503/LMZ31506/TPS7A8801RTJ devices via INH/EN

    Resolved
    Part Number: LMZ31506 We're using an LMZ31506RUQ to generate 1.0V from 5.0V - which it is doing - and then using the PWRGD output of that device to enable 2 LMZ31503RUQ's,1 LMZ31503RUQ, and 1 TPS7A8801RTJ. However, the outputs of these sequenced devices…
    • Resolved

Didn't find what you are looking for? Post a new question.