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TPS61089: VQFN Package

Svetlana Feldman
Prodigy 130 points
Part Number: TPS61089

Hello,

There is a drawing of a via near pad 11 on the Land pattern example. It shows that on pin 11 the Solder mask should be larger than the metal by 0.05,right?

There is a via in the metal of pin 11's pad, what is it for?

The SW pin is connected to an inductor and two resistors on the same plane.Why do I need a via?

In the example layout (Figure 17) on page 19, there is no via on the SW pin or perhaps I don't see it because it is covered by solder.

Please advise.

Thank you,

Svetlana.

  • 0
    TI__Guru**** 191445 points
    I probably know the answer to this. I will defer to the actual support person for TPS61089. They are likely on holiday though, so let me know if you need a quick answer or if you can wait.
  • 0 in reply to JohnTucker
    Prodigy 130 points

    Hello John,

    I can wait until after the holliday.

    Thank you and Happy holliday.

    Svetlana.

  • 0
    TI__Mastermind 40080 points

    Yes, the Solder mask should be larger than the metal by 0.05.


    If the SW current is big and the customer want to connect with the inductor use several layers, then they can add this via. But if they just want to connect the SW with the inductor on the same layer, then this via needn't added.


    Could you please share the detailed application information with us? Like in what kind of equipment? Volume? MP schedule?
    We need to collect these application information at the customer side to better unstanding the marketing needs.my email address is helen-chen@ti.com