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TPS3897: Reset signal with JFET

user4090349
Intellectual 991 points

Part Number: TPS3897

Hello TI expert

In AN snva845 figure 3, a JFET is used to mitigate the indeterminate output voltage.

I wonder why a JFET is used here. What's the key parameter for the JFET?

Is it possible to change it to MOSFET?

Thanks in advance!