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Hi @johnnymopo,

I reached out to one of our design engineers about this thread. They responded that "You can power the JTAG-SMT3-NC from USB if you use a regulator to step it down to 3.3V. The current consumption may be a little higher when using both channels… so maybe budget 150-200mA for VDD and 35-40mA for VREF."

best regards,


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