Spice Model for Shunt Voltage References LM4041 / LM4051

[Steffen Wunderlich]

Hello,

does any know about models of LM4041 or LM4051??
Nothing to find at national home page and goggle.

regards
Steffen

 

[Zom-B]

On Sep 28, 2:40 pm, Steffen Wunderlich <st...@alice-dsl.net> wrote:

Hello,

does any know about models of LM4041 or LM4051??
Nothing to find at national home page and goggle.

regards
Steffen

I'd like to know about it too.

In the mean time, you might be able to use a (modified) zener diode
model at if you want to simulate the non-adjustable version.

Regards,

 

[Zom-B]

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