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CSD88539ND: Can we use this along with LTC4365IDDB

prema R
Intellectual 400 points
Part Number: CSD88539ND
Other Parts Discussed in Thread: CSD17318Q2, , CSD85301Q2

Tool/software:

HI

We are using LTC4365IDDB#TRMPBF in our design  for over voltage and undervoltage protection.We require to choose external Dual Mosfet for a Vin of 5V. 

the part number suggested in datasheet is below, but it is obsolete. We want to know if we can use this TI part. Please let us know if the Vgs th range and other electrical parameters are fine to work with LTC4365.

the below is a snippet from LTC datasheet ,to be considered for Mosfet selection.

  • 0
    TI__Mastermind 33215 points

    Hello Prema,

    Thanks for your interest in TI FETs. The CSD88539ND is not the correct choice for this application. The LTC4365 gate drive voltage is 3.6V typical for 5V input & output. The CSD88539ND requires gate drive voltage ≥ 6V. The TI recommended cross to the SI7940DP is the 2 x CSD17318Q2 30V single discrete FET in 2x2mm SON package. You would need to use 2 of these devices. If you can live with higher on resistance, then the CSD85301Q2, 20V dual common source might be an alternative. Please let me know if you have any additional questions.

    Best Regards,

    John Wallace

    TI FET Applications