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UCC27524A: difference between UCC27524

Part Number: UCC27524A
Other Parts Discussed in Thread: PMP8740, UCC27524,


Good day.

Our customer is testing the PMP8740 charger design. In DC/DC converter previously UCC27524DGN was used. Now they intend to use UCC27524ADGN. Any difference between the two chips?

Thank you.



  • Hi Cedrick,

    Thanks for reaching out!


    This post will likely answer your question.


    From the post:  " The reason for having two versions is that UCC27524 is less expensive than the UCC27524A and can be used in applications where negative voltages are not present due to either the nature of the load or it may be the designer's choice to use external circuits, such as snubbers, damping resistors, or careful layout to control these negative voltages. Basically it costs the manufacturer more to produce a chip that has higher negative voltage immunity at a pin."

    UCC27524A has larger input voltage range (INA and INB) than UCC27524.

    UCC27524A is -2V to 18V.

    UCC27524 is 0V to 18V.

    Depending on the application, it will be worth it to have more input voltage range.


    I hope this answers your question.  If so, please press the green button; otherwise, feel free to follow up.


    Aaron Grgurich