LMR16006 shutdown hysteresis

Konstantin W

Other Parts Discussed in Thread: LMR16006, LMR14006

Hello,

in my design I'm using the LMR16006 simple switcher. I want to add a voltage divider to the SHDN pin to set the UVLO to about 20V.

The datasheets states that the rising !SHDN threshold is 1.05V to 1.38V but there is no information about the falling !SHDN threshold or the hysteresis voltage.

There is a hysteresis current though. But i don't know what that means.

Is there a way to calculate the hysteresis voltage from the hysteresis current using the impedance of my resistive divider?

Thanks in advance!

Regards,

Konstantin

over 8 years ago

0 YangZhang over 8 years ago

TI__Genius 11085 points

I've notified the engineer who developed this part to look at your question. -Yang

0 Luke Pan over 8 years ago

TI__Intellectual 2790 points

Konstantin,
Pls refer to below link. The UVLO setting point is the same as LMR14006.
e2e.ti.com/.../433119

0 Konstantin W over 8 years ago in reply to Luke Pan

Prodigy 80 points

Luke,

thanks for you reply!
I looked at the datahsheet of the LMR14006. I couldn't find any additional information about the SHDN input to what I already found in the LMR16006 datasheet.
I tried to access the second link that you provieded, but I get the message "Access Denied".

Maybe I should rephrase my initial question:
What is the falling edge threshold voltage of the !SHDN input of the LMR16006?

Thanks,
Konstantin

0 Luke Pan over 8 years ago in reply to Konstantin W

TI__Intellectual 2790 points

Hi,

Pls see below image.

0 Konstantin W over 8 years ago in reply to Luke Pan

Prodigy 80 points

Hi Luke,

thank you very much!
This is the piece of information that I was looking for.

Regards,
Konstantin

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LMR16006 shutdown hysteresis