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UC3845A: specification change question

Part Number: UC3845A

Noted that free-air operating temperature range has been reduced from -40°C to 85°C, and is now 0°C to 70°C. Need to know basis of this specification change.

For future products, is this part number no longer recommended?



  • Hello Brian,

    The UC3845A is an old Unitrode device and the recommended operating temperature was 0 to 70 degree C.
    The data sheet was converter to TI format in 2016 and error was made in the recommended operating temperature (-40 to 85 C).
    This error was corrected in the data sheet.

    This device is still used today and is still recommended for new designs.

    Warm Regards,