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LM5141: volatage drop

Part Number: LM5141

My problem is voltage drop out.

I'm using two LM5141 - 1 for 3.3V, 1 for 5V.

5V buck is okay, but 3.3V buck has a problem sometimes.

PWR_12V is a power source from adapter or power supply.

When I set voltage to 9V, 10V or 14V, it has no problem,

But when I use 12V, it occurs with over 50%.