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LM3435: Operate Only I2C Digital Block with SVDD

Kenichiro
Mastermind 9165 points
Part Number: LM3435

[ LM3435 ] Operate Only I2C Digital Block with SVDD

Hi,

My customer would like to enable I2C communication with LM3435 by applying SVDD to the device.
Would it be possible?

[ LM3435 ] SVDD Supply Range and Power Sequencing
e2e.ti.com/.../2088957

Thanks,
Ken

  • 0
    TI__Expert 3885 points
    Hi Kenichiro-san,

    I believe you still need to have VIN applied for necessary system setup through I2C.
    I don't remember exactly the detail but it seems that the internal registers were powered by VIN instead of SVDD.

    SVDD is only used for I2C interface to external pull-up, not powering internal logics and registers.

    Thank you!
  • 0 in reply to Issac Hsu
    Mastermind 9165 points

    Thanks, Issac,

    I asked customer to apply both SVDD and VIN.

    By the way, do we have the specification of current of SDATA pin other than condition below?




    Thanks,
    Ken