UCD90160: what is the maximum value for MON pin voltage sense?

Ann_Lien

Part Number: UCD90160

Hello expert,

My customer would like to decrease current consumption so they want to know the maximum voltage divider for 3.3V and 3V. Right now they put voltage divider R1/R2 = 4.02kohm/4.02kohm and they think current consumption is too high. Do we have maximum value could provide to them? Thanks a lot!

Best regards,

Ann Lien

over 1 year ago

0 yihe over 1 year ago

TI__Guru 66870 points

you mean 3.3/4K = 0.825mA is a concern for you customer. UCD is to monitor the voltage and there is no load.

Regards

Yihe

0 Ann_Lien over 1 year ago in reply to yihe

TI__Genius 14760 points

Hello Yihe,

They want to smaller power consumption so they need to know the maximum value for the resistor on MON voltage divider. Could we use 100kohm level or Mohm level for customer's requirement? Thanks a lot!

Best regards,

Ann Lien

0 yihe over 1 year ago in reply to Ann_Lien

TI__Guru 66870 points

Less than 1mA is already very low. you do not want to use Mohm level since there is a leakage current and it will cause voltage drop.

10-20K ohm is ok.

Regards

Yihe

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UCD90160: what is the maximum value for MON pin voltage sense?