MC33PF8200DEES

[Chethanbg]

We are using device MC33PF8200DEES in our custom design with MiMX8DX6AVLFZAC processor.

PMIC says input voltage range 2.5V to 5.5V .Our custom board gives 3.3V input to PMIC but can we get 3.3V output in SW7(Buck 7 configured as 3.3V output)?

There is no graph or formula in MC33PF8200DEES datasheet about output voltage with respect to input voltage how much it can drop max from input?

Please clarify.

[Chethanbg]

what will be the output then how much will it drop?Any formula is there?

What is the minimum input voltage need to give to get output as 3.3V?

[guoweisun · Accepted solution]

No formular here,because of lack of maximum duty cycle parameter, but according the maximum current 4.5A and high side MOSFET RDSon 0.15ohm, the estimate maximum output value up to 2.6 or 2.7V @VIN3.3V

[guoweisun]

No,if the input is 3.3V the output can't get 3.3V.