• LTM4676A

    Didn't find info about the values about CONFIG resistors when a LTM4676A is used in parallel mode (single output at 3.3V and 26A).

    1. should VOUT0CFG and VOUT1CFG be tied together?

    2. Was the value 11.3K ohms at parallel mode (is 22.6K  when dual channel…

  • LTM4676A output voltage setting

    Hello Analog experts,

    I used LTM4620A in my last design but now I want to use LTM4676A because it has wider input voltage range. Output voltage of LTM4676A can be set either with PMBUS or by PIN Strapping. I want to use PIN Strapping for setting the…


    Hi folks,

    I've just tested a design with LTM4676A as a replacement for LTM4676. The configuration applied by pin-strapping (no programing needed).

    I did follow observation: In design with LTM4676 the limit of VIN is much higher than by LTM4676A…



    I designed my board with LTM4676A but I faced with very unknown problems.

    The parameters of my design is:

    V input = 12V

    RUN 0=3.3V

    RUN 1=3.3V

    V out CH0 = 3.75V (Rout0cfg=32.4K , Rtrim0cfg=2.43K)

    V out CH1= 3.75V (Rout1cfg=32.4K , Rtrim1cfg=2.43K)

  • Question about TON_DELAY of LTM4676A


    My customer is consodering to use LTM4676A and ask some questions about TON_DELAY value.

    They say that they don't change any register values, so TON_DELAY is a default value which is 0ms (0x8000).

    But as their test result, it seems to…

  • RE: LTM4676A; using spread spectrum clock

    Switching frequency is 600kHz and generated by LTC6909.

    This 600kHz +/-10% with 9.3kHz modulation rate clock are supplied to LTM4676A.

    It seems LTM4676A will not be able to track higher modulation rate clock.

    Thank you for your help.

  • RE: Questions about initial register setting of LTM4676A & LTM4677

    Dear Fil,

    Thank you for your kind explain.

    I received below answer from Haihua in EZ.

    "Customer can order the pre-programmed part with VIN_ON updated for 5Vin application.

    Parts can be programmed while VIN is not available as well. Please refer…

  • Question about LTM8024,LTM4676A and LTM4622 and request a schematic review


    My customer is using LTM8024,LTM4676A and LTM4622 in their product.

    And they want to get your review about their schematic and ask some questions about using above components.

    Please refer their schematic & questions and let me know your opinions…

  • LTM4676A disappears from i2c bus and asserts both RUNx pins low while doing NVRAM programming

    We have a design with LTM4676A, 4675, and 4678 on the same bus.  We make several register changes from how the modules ship from the factory, then save NVRAM.   In a seocnd step, we do a restore from NVRAM, then write a serial number USER_DATA_00 and USER_DATA_02…

  • RE: LTM4676/LTM4677

    Yes, the LTM4676 and LTM4676A default NVM is programmed to respect the RCONFIG pins. See LTM4676 datasheet page 52 and LTM4676A page 59 for more details.