Can I apply the safety operating boundary condition of NJM431 to my every circuit diagram?
The safety operating boundary condition characteristics can not be applied to all application circuit diagrams of NJM431. It can apply this typical characteristics only if a designed diagram of NJM431 connects reference terminal and cathode terminal.
If you apply to other application circuit diagram, you should check a frequency characteristics at your application circuit. The content written above can be applied to every shunt regulator.
Note) Oscillation might occure while operating wuthin the range of safety curve.
So that, it is necessary to make ample margins by taking considerations of fluctuation of the device.