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LM2678-3.3 NoLoad Operation

Hi 

My Customer has question.

Please tell me.

When no Load , the Vout rises without SW operation.

When the load = 1kΩ, the Vout becomes constant while SW operation.

Is it not possible to use in no-load?Also, whether this operation is normal?

Regard

T Kishi

LM2678 No load.pdf