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TIC10024-Q1: Why do we need wetting current control?

Yoshiki Ochi
Genius 9465 points
Part Number: TIC10024-Q1

Hi team, 

Why do we need wetting current? Is it required all mechanical push bottom switch or mechanical relay?

Regards,
Ochi

  • 0
    TI__Mastermind 26806 points

    Ochi-san,

    Wetting current is the method used by this device to determine which switches are open and which are closed. It is configurable based on the specific application being used. Specifically, it depends on the equivalent resistance of your switch when closed. You would use the relationship V=IR to determine the voltage across the closed switch, and it would need to be low enough to register as closed when measured by the TIC10024-Q1.

    Please give a look at section 10.2.2 of the data sheet, which shows a great walkthrough of the design procedure for this device to help explain this.

    Best,

    Danny