This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

INA219: INA219 power dissipation

Part Number: INA219

Hi Team,

Customer would like to know the power consumption about the INA219BIDR, can I calculate it with below under 25 degree of room temperture?

Rja=111.3, 

Tj= 150

150=25+111.3*Pd.

maximum Pd = 1.12W.

so the this device maximum power loss is 1.12W, is that correct? or you have any comments?

Regards,

Mark

  • Hi Mark,

    The calculation reflects the thermal capability of the SOIC package itself, and has nothing to do with INA219 actual power dissipation.

    To calculate the actual power dissipation, simply apply P=VI equation to the numbers found in the EC table:

    Hence, the max power consumption by INA219 is 5.5V*1mA=5.5mW.

    Regards, Guang