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AP3843C TI replacement part number

JiaJia Chung
Prodigy 20 points
Other Parts Discussed in Thread: UC2843A, UC1843A, UC3843A

Dear team, 

Could you please give me a suggestion which TI part number is suitable to replace AP3843C? Thank you.

Regards,

JiaJia

  • 0
    TI__Prodigy 90 points

    Hi JiaJia,

    Thanks for your interest in TI components. Based on your needs, I would recommend the UC1843A as a good replacement. The part is pin-to-pin compatible with the AP3843C, and a look at the block diagrams reveal that both parts function nearly identically.

    Regards,

    Michael Wu

  • 0 in reply to Michael Wu - HVC
    Prodigy 20 points
    Dear Michael,

    Thanks for your reply promptly. May I know what is the difference among UC1843A/ UC2843A/ UC3843A in addition to temperature range? Thanks again.

    Regards,
    JiaJia
  • 0 in reply to JiaJia Chung
    TI__Prodigy 90 points

    Hi JiaJia,

    Here is the datasheet -- I will be making some page number references to it.

    On the first page, the UC184xA, UC284xA, and the UC384xA are available in different packages. On page 7 under section 6.4, the devices also exhibit different thermal characteristics. You will also find some differences under section 6.5, electrical characteristics, under the "Reference" and "Oscillator" subsections. You can quickly jump to these sections in the datasheet by searching for "UC184xA", "UC284xA", or "UC384xA", and you'll be able to find specifics regarding each of the individual specifications. From there, you can choose whichever one works best for your application.

    If you have any further questions, feel free to let me know!

    Regards,

    Michael Wu