The leakage current of L6470H's ADCIN pin

[MSui.1]

Please see the attached picture. Our company is using L6470H chip for our design. According to the typical application in the datasheet, we want get 3V on the ADCIN pin. Our Vs is 24V and the voltage divider resistors that we chose are Ra= 13K and Rb= 91K. Since we didn't find the leakage current of L6470H's ADCIN pin through datasheet, we don't know whether these resistors' value that we chose are too large. Could you please tell me the leakage current of L6470H's ADCIN pin and help us to see whether we chose the appropriate values for these resistors?

Thank you so much!

[Dario CUCCHI · Accepted solution]

Hi @MSui.1​ ,

I’m sorry for this late reply and I hope it can be still useful.

The ADCIN pin is a high impedance pin, so its leakage current is less than 1nA.

You can definitely use that resistor values for your application  (Ra= 13K and Rb= 91K) without any issue.

[MSui.1]

Thank you so much for the reply! It's still useful.

[Dario CUCCHI]

Hi @MSui.1​ ,

I'm Glad this helped you.

Could you mark the reply as a "Best answer" ?

It will increase the post visibility and will help the other community members, who have a similar question, to quickly find an answer.

Thank you and have a great day !