To receive the best efficiency possible at light loads, the user can select the Auto Pulse Frequency Modulation, also called Pulse Width Modulation, mode. Auto PFM/PWM increases the efficiency by skipping switching pulses and reducing the device’s current consumption. Alternately, Forced PWM forces the device to operate at fixed frequency across load, this has some efficiency impact at light load but the user can easily predict the operating frequency and set filters as needed. The user can choose between these modes using the SCONFIG pin discussed previously.