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AMC1304L25: VCC pin derating

Part Number: AMC1304L25

Customer would like to know if there is a continue DC voltage running between 6.1V to 6.5V on VCC pin. Is there any risk to damage pin?

In d/s, 6.5V,max is specified as abs. max rating. Wherever the VCC voltage is under 6.5V, the Rating should be ok, correct?

Regards

Brian

  • Hi Brian,

    Thank you for your question. The absolute maximum ratings specify what conditions the device can operate under without permanent damage. So, if you keep the voltage under 6.5 this should not damage the pin. However, we suggest keeping the supply voltage within the recommended operating conditions (5.5V) for reliability. If you exceed these recommended operating conditions, the device may not operate functionally. 

    Please let me know if you have any more questions. 

    Best regards,

    Eva

  • Hi Eva,

    Thanks for your kindly reply. May I ask what kind of functions will be affected by the voltage between 5.5V and 6.5V?

  • Hi Brian,

    I don't have specific information on what functions might be affected outside of the recommended operating conditions. But generally, we cannot guarantee any performance in the range from 5.5-6.5V.

    What application are you looking to use this device for?

    Best regards,

    Eva

  • Hi Eva,

    My application is current sensing on motor drive.

  • Hi Robert,

    Thank you for sharing. It is best to avoid operating above the recommended 5.5V. If you need to use a higher voltage, we can help you find an alternative device. 

    Best regards,

    Eva

  • Thanks Eva. 

    Since there was a mistake on the VCC designs with powering level, customer just would like to evaluate the possible risk for some units that already shipped in the market. thanks.  

  • Hi Brian,

    I understand. In this case, I think if it is guaranteed the voltage is under 6.5 the risk is low. However, there is potential for noise coupling/transients that could cause the voltage to go above 6.5V. Repetitive stress like this could damage the device. 

    Best regards,

    Eva