The device uses fixed frequency, peak current mode control. As a synchronous buck converter, the device normally operates in continuous current mode under all load conditions. The output voltage is compared through external resistors on the VSENSE pin to an internal voltage reference by an error amplifier, which drives the COMP pin. An internal oscillator initiates the turn on of the high-side power switch. The error amplifier output is converted into a current reference, which compares to the high-side power switch current. When the power switch current reaches the current reference generated by the COMP voltage level, the high-side power switch is turned off and the low-side power switch is turned on.