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Forum Post: RE: LM5117 tolerance to switching spikes coupling to LO output pin

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Hi Gavin

Your thinking is right. -0.3V limitation is due to diode clamp inside. The worry is the overheating of the internal clamp diode.

In worst case, the diode drop can be 0.3V, usually it is higher than 0.3V. 0.6~0.7V?

Regards,

Eric


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