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L5988D problem

jernej
Associate
Posted on July 30, 2013 at 10:46

I need a DC-DC converter from 12V to 3.3V and 4A. So I decided for swiching regulator L5988D.

My circuit is the same as in 

https://www.dropbox.com/s/1fca0waylp8x795/switcher.png

.

My problem is, that switcher begins turning itself off at current cca. 0.8A. I even removed R_LIM, so there is no current limit.

What am I doing wrong?

#l5988d-switcher-turning-off
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