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Part Number: LM2576S-ADJEVM
Other Parts Discussed in Thread: LM2576

Hi There !!!

I´ve got problem relating LM2576-ADJ, some parts of the batch, do not work well regulating and converting the output voltage and we´ve noitced also the frequency is out of range (oscillating around 25kHz) where the correct work frequency is about 52kHz.

But some parts work perfectly on our application !!!

Could you help us identify the occurence of the effect?

Follow below the parts of the batch which we´ve got problem:


Parts of the batch it works well: