Update:
Due to customer interest / need for the library, we now include the source code for the power library in the SDK. For older products (like LPC546xx) we have an application note on the product page:
https://www.nxp.com/docs/en/application-note/TN00038.zip
Please carefully review the caveats to consider when making changes as these will affect power consumption and can impact product reliability if changed from recommended values used in the library.
Previous post below.
Hi Alan,
We don't normally publish this type of source because customers could make changes to internal device settings that could impact device characteristics, hence invalidating the datasheet information.
If you require more information due to your company's policies please contact us via your NXP sales contact (or distributor if you are not working directly with NXP) to make this request.
Regards,
Brendon