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TINA/Spice/LM4041-N: Spice model question

Aaron Spaete
Expert 4275 points
Part Number: LM4041-N
Other Parts Discussed in Thread: TINA-TI

Tool/software: TINA-TI or Spice Models

Team,

My customer has the following issue. 

I’m having trouble with the LM4041-N-ADJ SPICE model. If I tie V- to GND & bias V+ positive it regulates at the programmed voltage (1.5V). However, if I tie V+ to GND & bias V- negative, it doesn’t regulate. Can you help?

I’ve attached my LTSpice file & symbol.

"lm4041-n-adj" should be an .asy and "adj shunt reg" should be an .asc extension, so please change.

lm4041-n-adj.datadj shunt reg.dat

BTW, what's the best way to post these files?  

Thanks,

Aaron

  • 0
    TI__Mastermind 41310 points

    Aaron,

    Unfortunately, we are not allowed to assist with LTSpice issues per the EULA of LTSpice.

    We did take a look at the device in TINA-TI and found that is does not work correctly when the V+ node is tied to ground.. The model is an older model that uses BJT devices and I have not found a way to make the model function in this configuration.