IMXRT1020 Power Supply configuration

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IMXRT1020 Power Supply configuration

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dmarples
Contributor IV

Hi,

I'm slightly confused about the LDO_USB as described in section 4.2.2.2.3 of the HDG for the 1020.  The implication is that this will produce a nominal 3V from the USB 5V in - is this intended to then be used as an input for the DCDC converter or is it _just_ to provide 3v for internal USB purposes?  It would obviously be quite nice to avoid needing an external LDO if the one on-chip can be used!

If it can be used to power the DCDC converter what is its maximum current capacity please?

Regards

DAVE

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art
NXP Employee
NXP Employee

The internal LDO_USB regulator is only meant for internal USB purposes. Its load capacity is not enough to supply anything else than the USB core.


Have a great day,
Artur

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