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PCA9306: Current Consumption

joe lindula
Mastermind 6940 points
Part Number: PCA9306

Hello, I am using the PCA9306TDCURQ1 on my design and need a little help determining the current consumption. I have connected Vref1 to 1.8V and Vref2 to 3.3V. If anyone can give me some help I would greatly appreciate it.

Thanks,

Joe

  • 0
    TI__Guru 53575 points

    Hi Joe,

    A simple estimation of the idle supply current is (Vref2 - Vref1) / 200k-Ohm. The actual power is supplied by the source connected to Vref2.

    More detailed current measurements have to do with the pull-up network connected to the device and the device's internal Ron. More information on these calculations can be found from this post:

    Let me know if you have any more questions.

    Regards,

    Eric