# Best way to create a regulated 1.95V?

I need a 1.95v for a VDDCORE of a microprocessor I'm using, what would be the best way to get 1.95V from 3.3v? or is a regulator the best way.

• How much current? What accuracy is needed? How much ripple can be tolerated? – The Photon Apr 6 '16 at 21:39
• Alex you must take on board what Photon said otherwise you will get answers that while being "correct" they wont be practical for you. – Autistic Apr 6 '16 at 21:46
• Are you sure the microprocessor can't provide the regulation for you from VDD, because a lot of them will? – DigitalNinja Apr 6 '16 at 21:46
• I'm not sure, it says VDDCORE requires 1.95V. if it could surly they wouldn't need the VDDCORE pin? – Alex Apr 6 '16 at 21:52
• Usually you'd put a cap on that pin even if it's internally regulated. Link the data sheet for us to see. – DigitalNinja Apr 6 '16 at 21:53

It's not necessary to provide the VDDCORE voltage externally. VDDOUT can provide the typical 1.8VDC for the core, so you can just connect this to VDDCORE and VDDPLL with external decoupling caps (described in section 5.3).