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SYS_VDD2_3P3V / SYS_VDD3_3P3V fanout

Tagged: fanout OSD335x-SM

This topic has 1 reply, 2 voices, and was last updated 6 years, 11 months ago by Erik Welsh.

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- November 13, 2017 at 12:48 pm #4109
  alsaleem
  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.
- November 21, 2017 at 8:25 am #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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