I found a model that works for me.
It's the model of the TLV431AJ, with some slight modifications:
Reference voltage (I2*R2): 1.249V -> 1.224V
Dynamic impedance (R3): 0.2 Ohm -> 0.5Ohm.
If I'm not mistaken, it even considers temperature. If so, temperature
simulations might be incorrect.
*******************************************
* REFERENCE
* | ANODE
* | | CATHODE
* | | |
..SUBCKT TLV431AJ 1 2 3
V1 6 7 DC 1.4V
I1 2 4 1E-3
R1 1 2 8.333E6
R2 4 2 RMOD 1.224K
R3 5 7 .5
D1 3 6 DMOD1
D2 2 3 DMOD1
D3 2 7 DMOD2
*E1 5 2 POLY(2) (4,2) (1,2) 0 710 -710
E1 5 2 VALUE = {V(4,2)*710 + V(1,2)*-710}
..MODEL RMOD RES (TC1=1.4E-5 TC2=-1E-6)
..MODEL DMOD1 D (RS=.3)
..MODEL DMOD2 D (RS=1E-6)
..ENDS TLV431AJ
*******************************************
Regards,
Zom-B
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