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AWR1642: 1V internal LDO bypass mode

Xiong JIANG
Prodigy 180 points
Part Number: AWR1642

Hi Ti expert,

When I use 1v directly feed on VIN_13RF1&VIN_13RF2.  Whether VOUT_PA is mandotory to connector to 1V? What's the problem if not connect VOUT_PA to 1V? Thanks a lot!

  • 0
    TI__Mastermind 31680 points

    Hello Xiong,

    When you're using the 1V operation, you'd be basically bypassing the internal LDO and hence you should connect VOUT_PA to the 1V supply.

    With this, you are connecting to the external LDO, instead of the internal LDO and hence you also need to make sure that you disable the internal LDO using the “RFLDO_BYPASS_EN” API for 1V supply.

    You can read more about this on our Hardware FAQ page as well :

      

    Regards,

    Ishita