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UC3842A: UC3842AD8TR review schematic

Lawrence He
Genius 3280 points
Part Number: UC3842A
Other Parts Discussed in Thread: AM26C31, UC3842

Dear,

our client design UC3842AD8TR, we need double confirm schematic as  P5 point connect to AM26C31 Vcc Pin16, it's could be okay?

If any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence.

  • 0
    TI__Genius 13660 points
    Hi Lawrence,

    Thank you for your question, and I am working on it.

    Best Regards
    Teng
  • 0 in reply to Teng Feng
    TI__Genius 13660 points
    Hi Lawrence,

    It is OK to use UC3842 output voltage as the supply voltage of AM26C31. But you must note the specifications of AM26C31. Its maximum supply voltage is -0.5~7V, and it is recommended to operate under 4.5~5.5V supply voltage. So I suggest that you'd better to test the voltage of P5 in advance before connect it to Vcc Pin of AM26C31, though I think it could be realized within allowable range easily as P5 voltage is as the loop feedback control voltage in your circuit.
    By the way, I suggest that place a low-ESR, 0.1uF ceramic bypass capacitor between Vcc and ground of AM26C31 to reduce the coupled noise, and placed as close to the device as possible.

    Regards,
    Teng