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TLC5926 PowerPAD Connection

Nicolas Prieto Angueira
Prodigy 70 points
Other Parts Discussed in Thread: TLC5926

Hi!

I'm analizing to use TLC5926 PWP Package beacuse of its size. What kind of problem could apper if I don't solder the PowerPAD? I'm going to use wave soldering, so it could not be soldered. If i get sure of using the IC far away from its maximum power disipation limit, can I use it anyway?

Thank you!

  • 0
    TI__Genius 14890 points

    Nicolas,

    The PowerPAD improves thermal performance.  Without soldering the PowerPAD, you lose much of the improvement.  But, if you are operating at lower currents (and lower VOUT) levels, you may be okay.  The TI Analog eLAB web page has some information that may help you.  You must be very careful to calculate the correct IOUT/VOUT characteristics and how they impact the self-heating of the TLC5926.  Additionally, I would suggest investigating the JEDEC specifications to understand what conditions we review in the datasheet (JESD 51-3, JESD51-5 and JESD51-7).

    The TLC5926 does have thermal shutdown, so the device will protect itself. 

    TI Analog eLAB link:  http://focus.ti.com/adc/docs/midlevel.tsp?contentId=105986

    Regards,

    Dick