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LMZ13608 - Saw tooth on output

Zeev Gerber
Intellectual 500 points
Other Parts Discussed in Thread: LMZ13608

Hi,

I use the LMZ13608 on the board with 1.2V, 2.5V, 3.3V.

first batch was 3 cards.

In one of the cards , on the voltage of 1.2V, i get Saw tooth on the output of about 200 mv and every ~175 us (not the freq of the lmz13608 internal osc).

I attached schematic of the devise implementation.

I read again the DS and didn't found any explanation except defect component.

Pls advise

Regards

Zeev Gerber