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LMK5C33414A: VDDO unpowered

Bernhard Boehmer
Expert 1310 points

Part Number: LMK5C33414A

Hello TI,

May VDDO_2_3 be left unpowered or connected to 0V if / whilst OUT2 and OUT3 are (temporarily) unused? e.g. if OUT2 and OUT3 clock a section of the board which is sometimes powered down?

Put differently, must all VDDO supplies be valid at all times in order to use any OUT clock?

  • +1
    TI__Genius 17025 points

    Hi Bernhard,

    The datasheet states which supplies must be connected to power because of the internal pins being routed to other internal circuitry.

    Only VDDO_4_7 and VDDO_8_13 can be powered down if unused. The rest must be connected to the supply.

    Regards,

    Jennifer