Maximum current from CN25 header

Discussion in 'UDOO BOLT' started by Maximo, Jun 10, 2020.

  1. Maximo

    Maximo UDOOer

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    I want to know how much current can I draw from the 3.3v output (pins 30 and 32) of the Embedded Controller Header CN25, and how much from the individual GPIO pins (13-28)
    I couldn't find the info on the documentation
     
  2. Maximo

    Maximo UDOOer

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    Maybe someone from the team can answer this. @evaloverde :)
     
  3. NickGR

    NickGR UDOOer

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    evaloverde likes this.
  4. Maximo

    Maximo UDOOer

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    But the CN25 is not the Arduino compatible connector (that is CN24), is the Embedded Controller one, so I don't think it has to follow the Arduino board standards.
     
  5. NickGR

    NickGR UDOOer

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  6. Maximo

    Maximo UDOOer

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    Great. That's for the GPIO pins. Thanks.
    Just need to confirm for the 3.3V pins (CN25 - pin 30 and 32), as I don't know what are those connected to.
     
  7. NickGR

    NickGR UDOOer

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    For those would need the schematics of the board.
     
  8. Maximo

    Maximo UDOOer

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    Yes, that's why I tagged @evaloverde, to see if someone can help us with that info
     
  9. ccs_hello

    ccs_hello UDOOer

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    Pin 30/32 cannot offer lots of current since many of the devices share the same power source which is from RT6575B's internal 3.3V linear LDO regulator (spec'd at 100mA, max 175 mA.) I'd say, do not consume 50mA or more.
     

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