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L5988D problem

Question asked by leon42 on Jul 30, 2013
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 this schematic.

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?

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