TPS3828-Q1: WDI PIN on Specification Consultation

WU YISYUAN

Expert 2165 points

Part Number: TPS3828-Q1

Hi,

I have some questions on the TPS3828Q1's SPEC.

my select Part.NO as below red box.

I need RESET Open-drain status, as below, it means WDI pin floating?

thanks.

over 5 years ago

0 Abhinav.Sharma over 5 years ago

TI__Genius 9375 points

Hi,

The device comparison table you are looking at is simply telling you if that product has a WDI pin or a MR pin. The TPS3828-Q1 contains both of these. If you are not using WDI, you should have this pin connected to high impedance to avoid a faulty reset.

Thanks,

Abhinav.

0 WU YISYUAN over 5 years ago in reply to Abhinav.Sharma

Expert 2165 points

HI Abhinav.Sharma,

Thanks for your feedback.

I saw datasheet as below:

It's means if i don't need WDI function, connect 1kohm to GND, this WDI pin is disable?

thanks,

0 Abhinav.Sharma over 5 years ago in reply to WU YISYUAN

TI__Genius 9375 points

Hi,

Your understanding is correct, you should disconnect WDI and if you are ok with the self-generated WDI pulse, leave it open, or else connnect it from WDI to GND.

Thanks,

Abhinav.

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TPS3828-Q1: WDI PIN on Specification Consultation