This circuit allows you to set a limit on the maximum output current available from your PSU. It’s very useful when you power-up a project for the first time - or carry out a soak-test. By setting an upper limit on the current available from your PSU - you can protect both your power supply [...]

Current-limit switches are virtually ubiquitous in system controls. They provide a safe means for regulating the current delivered to a load circuit. The switches allow the load current to increase to a programmed limit but no higher. This application note illustrates the implementation of a digitally programmable current-limit switch using MAX890L a current-limited, high-side P-channel [...]

The current-limit circuit in Figure 1 allows you to establish the setpoint by applying a voltage to one of the amplifier’s pins. With this design, it is possible to set the current-limit point with the output of a DAC, possibly under the control of an embedded µC. The OPA547 is a true op amp; thus, [...]