I'm looking to use the LM26420 in a design. The input voltage will be from 3.0V to 4.2V and I would like the output voltage to be 3.3V. Will this part work for my design requirements?
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The 3.3V Vout is possible from a 3V to 4.2V supply. But depending on the losses on the board and the passives used there could be slight variations on the efficiency. I recommend to test this use case before actual implementation.
Is a dual buck converter necessary for your application? If not, we could look into alternative newer solutions.