Another method for setting the limit voltage is to connect the LIMIT pin to a programmable digital-to-analog converter (DAC) or other external voltage source. The benefit of this method is the ability to adjust the current-limit threshold to account for different threshold voltages that are used for different system operating conditions. For example, this method can be used in a system that has one current-limit threshold level that must be monitored during a power-up sequence, but different threshold levels that must be monitored during other system operating modes.

In Table 7-3, V_TRIP represents the overcurrent threshold that the device is programmed to monitor, and V_SOURCE is the programmed signal set to detect the V_TRIP level.