I want to use LT3045-1 to generate an ultra-low noise 5V output voltage from a relatively noisy 15V input voltage.
Since the output current I need is just 30mA, 10V input-to-output-differential voltage should not be an issue I think.
However, in order to be on the safer side, I am considering using two LT3045-1 for my application.
I had two ideas in mind:
1) Connect two LT3045-1 in series and do the voltage conversion in two steps.
First convert 15V to 10V. Then convert 10V to 5V.
2) Connect two LT3045 in parallel where both of them have 15V input and 5V output.
Which of the options above would be better in terms of power dissipation and output noise do you think?
Thank you very much for your time and suggestions.