Im trying to simulate a circuit with low voltage zeners but couldnt find anything in 2V range in LTspice can anybody give me a LTSpice model for the low voltage zener please.
Zener are pretty useless as regulators/references that low, LED can be found with a range of Vf that low
even series regular Si diode for n x 0.7 V or build a Vbe multiplier shunt regulator and set the R ratio for the V you want
even series regular Si diode for n x 0.7 V or build a Vbe multiplier shunt regulator and set the R ratio for the V you want
If you need a zener diode for unrealistic schemes. And your curiosity driven, then you can use the diode model
.subckt ShuntRef 1 2 Vref=1.22 rd=1 inom=1m imin=50u
d1 2 1 MyD
d2 1 2 dp
.model MyD D(Ron={rd} Roff={Vref/imin*1.05} Vfwd={Vref-rd*inom})
.model dp D(Ron=1 Roff=1G Vfwd=0.6)
.ends
In a real circuit using a chip TLV431 or a similar.
.subckt ShuntRef 1 2 Vref=1.22 rd=1 inom=1m imin=50u
d1 2 1 MyD
d2 1 2 dp
.model MyD D(Ron={rd} Roff={Vref/imin*1.05} Vfwd={Vref-rd*inom})
.model dp D(Ron=1 Roff=1G Vfwd=0.6)
.ends
In a real circuit using a chip TLV431 or a similar.
You can get far with a 2V battery with a series R. Probably 99% correct,surely for checking if your circuit is correct.
But in most sims you can adjust the Vz of a generic zener anyway.
Jan
But in most sims you can adjust the Vz of a generic zener anyway.
Jan
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