LM5067: LM5067

Irene Caponigri

Part Number: LM5067

Rin issue: I would like to use the LM5067 for -12V protection, because of the internal voltage between VCC-VEE is fixed to 13V is it possible to use this device for input voltages lower than 13V and which is the correct value for Rin?

thank you

over 5 years ago

0 Rakesh over 5 years ago

TI__Guru** 105361 points

Hi Irene,

What is your max. operating voltage ? If it is less than 12.3V (the min break down voltage of internal voltage), you would not need Rin.

For higher than 12.3V input, Rin can be calculated as

Rin = (Vin-12.3V)/4mA

4mA is taken to provide 2x margin from the min 2mA requirment

BR, Rakesh

0 Irene Caponigri over 5 years ago in reply to Rakesh

Prodigy 120 points

Thank you Rakesh,

I was just wondering if the LM5067 was able to work with a supply voltage less of 13V (abs value).

Thanks so mutch

Irene

0 Rakesh over 5 years ago in reply to Irene Caponigri

TI__Guru** 105361 points

Yes. LM5067 works from 9V.

BR, Rakesh

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LM5067: LM5067