Voltage switching regulator feedback path current

[dany.1986]

Hello, I have got a question about how to calculate the current flowing through the feedback path of a voltage regulator. Is the solution as simple as saying that current flowing through resistors R1 and R2 equals to the voltage output divided by the total value of the resistance (R1+R2)?




What will be the current at the FBX pin?

 

[Dan Mills]

Pretty much, provided this current is much larger then the current into the feedback pin (Check the datasheet).

Regards, Dan.

 

[dany.1986]

Thank you. Is there a way to calculate what current flows into the feedback pin or is its value available only from the datasheet?

 

[crutschow]

Only from the datasheet.