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Thread: 5V vs 3.3V devices

  1. #1
    Marc Roggemans
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    5V vs 3.3V devices

    Hello,

    Infineon sells the xc800 controllers in 5V and 3.3V versions. According to the users manual both devices have an internal regulator of 2.5V for internal operation.
    The 3.3V and 5V is only used for I/O. Is it possible to use the 3.3V device on 5V and vice versa?

  2. #2
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    Infineon Employee
    Infineon Employee
    chismo is on a distinguished road
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    Hi Marc,

    This is not recommended and the behaviour cannot be guaranteed if used in such way.
    Reason is that the on-chip embedded voltage regulator (EVR) is configured differently during production. There is no way to reconfigure the EVR on the field.

    Regards,
    Min Wei
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

  3. #3
    New Member New Member martin.zuend is on a distinguished road
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    Hi Men Wei
    What ist the exact difference between the two configurations?
    Regards Martin

  4. #4
    New Member New Member lucas01 is on a distinguished road
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    A 3.3V powered LTC2862 can still accept the differential output voltage from a 5V powered LTC2862, and vice versa. In the RS485 standard a maximum of 5V differential output voltage is permitted.
    Also if you need renovation contractor check here.

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