On the surface, my question seems simple. But I assure you that it isn't! :)
On the first page of the datasheet it says, "Output Voltage Range: 1 V to 5.5 V". But in 8.1 it says, "The LP3878-ADJ can provide 800-mA output current with 2.5-V to 6-V output voltage." I know, literally the previous paragraph says, paraphrased, "any info below this may be horribly wrong", but still...
So which is it? I assume that because Vadj=1.0v then min Vout is also 1.0v. But since the datasheet contradicts itself I had to ask. So assuming it does Vout=1.0v then I have some more questions.
What about the feedback resistors? R2 should be a very high value (or maybe missing entirely). But paragraph 8.1 says R2 should be 1K to 5K. Given that, R1 needs to be almost 0 ohms. And if R1=0 then Cff is basically shorted and does nothing. But again, paragraph 8.1 says that Cff is required to...ensure loop stability.
Ugg! What to do?
If it matters, here is what I'm trying to do: Vin=3.3, Vout=1.0, Iout=5 mA to 300 mA.
Thanks in advance!
