Other Parts Discussed in Thread: LM2717
Hi,
thats the schematic I have, but the device doesnt work.
I have bought 5 of LM2717ADJ, but only 2 of them worked, I dont know where is the problem,
because the schematic is just from typical aplication note in datasheet.
Some of bad ones were heating but I think one of them was just doing nothing.
The voltage on input was 18.53V and I wanted 3.3V and cca 12V on the outputs.
I know, there was mistake with resistor dividers,(I just mis-read thing about internal divider) - its feedback (this couldnt destroy IC, even though, the calculated voltage would be around 3V... )
At least, there are two buck converters, and the mistake was only on the first, second divider was good.
I changed the wrong divider later but anything changed.
Could you please review the schematic and tell me what could possibly cause damage?
Or, at all... whats wrong?
Thank you very much