TPS3430-Q1: Resistance of Open-drain output WDO

Florian Strobel

Part Number: TPS3430-Q1

Hello TI-Team,

I use the TPS3430-Q1 in a safety project and i would like to know the resistance of the Open-drain output WDO when it is asserted. I want to know the value to calculate the resulting voltage on the reset pin of the microcontroller in context with the pull-up resistor.

I could not find the value in the datasheet.

Can you please help me with the value?

Best regards

Florian Strobel

over 1 year ago

0 Jesse Villanueva over 1 year ago

TI__Genius 14630 points

Hi Florian,

Our time is looking into your inquiry and will respond with the answer within 24 hr.

Just for additional clarification, you are inquiring about the rds(on) of the internal Open-drain fet of the WDO?

Jesse

0 Florian Strobel over 1 year ago in reply to Jesse Villanueva

Prodigy 142 points

Hi Jesse,

Yes that is what i want to know.

Its because in related ICs like a overvoltage undervoltage Reset IC the rds(on) can be up to a few hundred Ohms.

Thank you very much in advance.

Florian

0 Joshua Garcia over 1 year ago in reply to Florian Strobel

TI__Expert 6760 points

Hi Florian,

This information isn't given out by test team. I will perform a bench test and get back to you before end of day on Monday!

Thanks,
Joshua

+1 Joshua Garcia over 1 year ago

TI__Expert 6760 points

Hi Florian,

I have performed the bench test, the result was a 122 Ohm rds(on). Good luck on your project!

Thanks,
Joshua

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TPS3430-Q1: Resistance of Open-drain output WDO