This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

  • Resolved

CSD25402Q3A: Unique Footprint

Part Number: CSD25402Q3A

Hi

In one of my projects, i had to use a P- Channel FET in a dc-dc converter circuit. Unfortunately, the one i selected, CSD25402Q3A, doesn't withstand my input voltage of 24-26V. The strange thing i came to notice is that only Ti's P -FETs have this pin layout - Pins 1-4 Source, 5- 7 Drain. Rest of the manufacturers layout is the direct reversal of this one - Pins 1-4 Drain, 5 - 7 Source. Doesn't all these parts follow some unique standards? Does this happen with other components too? Now i'm not able to find an alternate for CSD25402Q3A, due to this pin layout.

Thanks

Vishnu

  • Vishnu,
    The reason for this difference that you note is that TI P-Channel NexFET technology is unique in that it is what we call "source down" where as our competitors are "drain down" so as you note, they will have the reverse pin out.

    As such, unfortunately yes, these P-Channel FETs (both the CSD25402Q3A and the CSD25410Q2) will be a footprint that is unique to TI.

    Best Regards!

    Brett Barr

    Product Marketing Engineer

  • In reply to Brett Barr1:

    Thanks for the reply.

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.