Why do engineers need to consider load factor and load characteristics? Let us further comment: The load characteristics of the device will be useful when we select the quiescent current (IQ) of the voltage regulator. For example, if the voltage regulator operates at full load most of the time, it makes little sense to choose a voltage regulator with ultra-low quiescent current IQ. When the load current is much higher than the quiescent current of the voltage regulator, there is no need to choose an ultra-low quiescent current voltage regulator. If the load factor (of the device) is low and the regulator is allowed to be shut down during standby or hibernation, it is important to select a regulator with low shutdown current. If the load factor (of the device) is low, but the voltage regulator needs to be powered all the time, it is important to choose a voltage regulator with a low quiescent current IQ. In addition, during normal operation, if the voltage regulator is lightly loaded most of the time, the ultra-low operating current of the voltage regulator is very important for optimizing efficiency and extending battery operating time.