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SI7021 boards

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  • AWIA AWI

    @fleinze The 662k on this board has a typical drop-out of 250mV and power consumption of only 1uA... and takes care of a stable power supply. I doubt if there is any advantage in bridging or removing the LDO.

    662k
    0_1456149818998_upload-5b22a252-988a-4acd-b4d8-15be0500a58c

    si7021
    0_1456149758981_upload-6a1d2eb3-c0c8-4556-a701-7d2e5db8608c

    GertSandersG Offline
    GertSandersG Offline
    GertSanders
    Hardware Contributor
    wrote on last edited by
    #21

    @AWI What happens when the input voltage drops below 3.1V ? It seems the output voltage just follows the input voltage minus the dropout. I have not measured this yet, but I'm assuming this, since i have nodes working below 3.1V and sending temperature and humidity readings.

    AWIA 1 Reply Last reply
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    • GertSandersG GertSanders

      @AWI What happens when the input voltage drops below 3.1V ? It seems the output voltage just follows the input voltage minus the dropout. I have not measured this yet, but I'm assuming this, since i have nodes working below 3.1V and sending temperature and humidity readings.

      AWIA Offline
      AWIA Offline
      AWI
      Hero Member
      wrote on last edited by AWI
      #22

      @GertSanders No conclusive reading from the datasheet. I will do some measurements later. ..

      0_1456219785462_upload-af85eb98-f577-4011-96e9-ef35b5ef97bb

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