MOSFET pull down in linear region

[matt111]

I have a current sense IC powered directly from a battery. I want the current sense IC to be in the shutdown state when the 3.3V power supply is disabled.

I have added a dual N channel MOSFET circuit (see attachments) to achieve a pull down on the shut down pin (active low and internally pulled high) when the
3.3V supply is not present. The circuit seems to work in LTspice but I am concerned about one of the MOSFETS operating in the linear region. (VDS < VGS - VT)

Is it safe to operate the MOSFET in this configuration or is there anything I'm missing that is considered bad design?

[Wimberleytech]

No, there is no issue with a MOSFET operating in the linear region.  It is perfectly fine.

You are driving the gate with 30 volts.  Make sure that the MOSFET you are using will support a VGS=30V

BTW, your notation about M2 says that it operates in Sat.  It appears to me that it too operates in the linear region...which is OK!

You may be a little confused about the terminology.  At a basic level, a MOSFET is either ON or OFF.  When OFF, there are no "regions" per say.  When it is ON, it can be in linear or saturation region. 

[Benta]

R1 and R2 are way too high. Check the datasheet for drain-source leakage current on your MOSFETs, you'll see what I mean.