System designers looking to use current limit switches need to look at a number of key specifications and narrow down the features that are needed. For example, one should decide what power supply voltage range, on-resistance (RON) of the integrated FET switch, current limit accuracy, threshold, and mode that are suitable for the application. General characteristics such as the package form factor and size are important as are the operating temperature range and supply current. Among the important protection features offered are active fault monitoring, reverse current protection, and thermal shutdown protection. Other integrated features in a current limit switch can include overvoltage protection, reverse voltage protection, linear regulation, supervisory reset output, etc. This presentation will cover some of the most important characteristics and features in this presentation which are marked with an asterisk (*).