SYS_VDD2_3P3V / SYS_VDD3_3P3V fanout

Forums Devices OSD335x-SM SYS_VDD2_3P3V / SYS_VDD3_3P3V fanout

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    • #4109
      Ahmad Alsaleemalsaleem
      Participant

      According to datasheet,

      SYS_VDD2_3P3V : 150ma

      SYS_VDD3_3P3V : 50ma.

      This is system wide rating. My board is battery operated and cannot use SYS_VDD1_3P3V.

      My question : how much left of these VDD’s for my board.

      The board has : SPI NOR, SDC, LCD BL (45ma). TLV320DAC3100 (spkr from vbat).

       

      Thanks.

    • #4117
      Erik Welsh
      Keymaster

      The values in the datasheet are the current that you can use externally. We de-rate the LDOs from the PMIC for the current that we use within the SiP. Also, from the other response, you can see the discussion about SYS_VDD2_3P3V.

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