MAX803 simulation - what am I doing wrong?

Schematic Simulation (Ngspice)
1

I’m trying to simulate a circuit using the MAX803, which is a 3-pin reset circuit. Actually super simple, the model was downloaded from the official AD site:

So I presume it’s OK.

But it won’t work.
I made a test project (attached) that only contains the MAX803.
max803.lib (2.8 KB)
Scratch2.kicad_pro (13.4 KB)
Scratch2.kicad_sch (15.9 KB)
Scratch2_1.wbk (1.5 KB)

No dice. It won’t converge.
Is AD using something in the model that ngspice doesn’t understand?
Or did I miss somethinng bleeding obvious?

Thanks.

2

Inspect → Simulator → Analysis 3 TRAN → Edit Analysis Tab → Uncheck ‘Save all currents’ and ‘Save all power dissipations’.

3

I would never, ever have found that myself.
Will try it later tonight.

Thanks!

4

Wow! Works. But I don’t understand why :frowning:

OK. Get it now. Just turn off all simulation outputs and it’ll converge. Great joke, haha.

Integrating the part in my real circuit, I get an error about “diodemacro_mostideal” which ngspice can’t seem to handle.

Oh well…

5

Solved the problem.
Switched from MAX803 to TLV803 (TI). Model runs beautifully, the circuit operartes as expected.
Still curious as to why ngspice doesn’t like the MAX 803 model, though.