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Original question:

PCM3060: Vcc, Vdd Sequence

PCM3060: PCM3060: Vcc, Vdd Power down Sequence

Kuramochi Tadahiko
Guru 28715 points
Part Number: PCM3060

Hi,

How is the power down sequence of Vcc and Vdd?

Best Regards,

Kuramochi

  • 0
    TI__Guru 63985 points

    Hello,

    Since the recommnded powering condition is for VDD to be derived from VCC, then during power-down the VCC will ramp down first and then VDD will ramp down with it as it goes below the drop-out voltage of the VDD LDO. 

    Since your customer is not deriving VDD from VCC (separate thread) then they should try to have the two ramp down together, or have VDD power down before VCC.