As discussed briefly in the comments, there are at least two possible solutions:
Assuming three data sets like this:
First, a single chart with a log formatted axis. This will work well if your data are simple and/or your audience is educated/prepared to read and understand it. Simply re-format your axis to an appropriate log and you'll get this:
If you're not sure your audience will understand the log scale, you can use a panel chart approach. Here are three identical charts, each with one data set and the appropriate Y axis scale:
To create this effect, just create/format your first chart with your first series, then duplicate (or copy/paste) the first chart for each series. Then change the Y-series data and make sure the Y axis is formatted properly.