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LM5066I: How do we calculate tau of the low pass filter connected to the pull up resistor?

Shunsuke Yamamoto
Expert 8801 points
Part Number: LM5066I


Tool/software:

Hi team,

I have a question regarding the low pass filter connected to PG pin to delay the PG output below. Based on my understanding, tau which is the time constanrt of the filter is calculated below.

Tau = R_PF2 x C_PG2

How do we calculate tau of this low pass filter since pull up resistor is connected to the low pass filter?

Best regards,

Shunsuke Yamamoto