Spice Model for Shunt Voltage References LM4041 / LM4051

Sep 28, 2008 2 Replies
S

Hello,



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



regards Steffen


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Z

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,

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Z

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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