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LTspice: Parametric Plots

Gabino Alonso - Strategic Marketing Engineer Aug 6th 2013

Plotting results in LTspice is as easy as clicking on a node to show voltage, or a component to show current—the trace is then displayed in the waveform viewer. In transient analysis, the horizontal axis defaults to showing time, but you can always change the horizontal axis to show other quantities (such as current) to validate model parameters.

To change the default settings of the x-axis:

  1. Click on a node/component to plot its voltage/current in the waveform viewer.
  2. Move the cursor to the horizontal axis of the waveform viewer (the cursor will turn into a ruler) and left-click.
  3. In the Horizontal Axis dialog, enter an expression for the “Quantity Plotted.
  4. Click OK.

LTspice IV: Parametric Plots




LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.