7.3.4 Power Good

The device has a built-in power-good function to indicate whether the output voltage is regulated properly. As soon as the average inductor current limit is reached, the power-good output gets low impedance. The output is open-drain and can be left open if not needed. By connecting a pullup resistor to the supply voltage of the externally connected logic, it is possible to adjust the voltage level within the absolute maximum ratings.

Because it is monitoring the status of the current control loop, the power-good output provides the earliest indication possible for an output voltage break down and leaves the connected application a maximum time to safely react.