TPS7A57: Precision EN Equation #1

Kurt Dentinger

Prodigy 10 points

Part Number: TPS7A57

What is V_EN in Equation #1 of the Precision EN equations (pg. 53)? Should it be V_IH(EN)?

Thanks for the help!

over 1 year ago

0 Juliette over 1 year ago

TI__Mastermind 18466 points

Hey Kurt,

I talked it over with a colleague and we are interpreting the equation differently. I've gone ahead an reached out to the systems engineer in charge of this part, to get their input.

Best,

Juliette

0 John Schneider over 1 year ago in reply to Juliette

TI__Genius 12511 points

Hi Kurt,

The VEN pin is derived as the EN pins voltage during operation. The IH_max and IH_min values are the max and min limits of the IH respectively.

Regards,

John

0 Kurt Dentinger over 1 year ago in reply to John Schneider

Prodigy 10 points

I think I need a little more clarification. From your response I see V_EN as two different possibilities:

1.) V_EN = V_IN* [R_(BOTTOM)/(R_(TOP)+R_(BOTTOM))]

2.) V_EN = V_IH(EN) typical or 0.65 V

Option #2 gives a V_ON value that makes sense. Option #1 does not. Is V_EN one of the two above options or is there a third?

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TPS7A57: Precision EN Equation #1