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UC2844A: UC2844A Abs. Max Spec Checking

Wei-Hao Chen (TW-FAE)
Expert 3260 points
Part Number: UC2844A

Hi team,

My customer wants to know what are the abs. max rerating for below pins for UC2844A, the datasheet did not label them very clearly. 

Pin Name Max. Rating
(V)
 
 
COMP  
VFB  
ISENSE  
RT/CT  
OUTPUT   
VCC 30
VREF 5.05

Thanks a lot.

Best Regards,

Wei-Hao

  • 0
    TI__Genius 13660 points

    Hi Wei-Hao, I am out of office now, please give me a day to reply. Thanks

  • 0 in reply to Teng Feng
    TI__Genius 13660 points

    Hi Wei-Hao,

    VFB pin and ISENSE pin are analog input pins, their Absolute Maximum Ratings is -0.3~6.3V as stated in datasheet. Please note that Recommended Maximum Operating voltage of VFB is 2.5V, of ISENSE pin is 1V. 

    Absolute Maximum voltage of VCC is 30V, and recommend VCC to be at 12~28V.

    The other pins COMP, RT/CT, OUTPUT, REF are all output pins, thus no Absolute Maximum Ratings are provided for them.

    Regards,

    Teng