ADP1822-EVALZ, Evaluation Board for PWM, Step-Down DC to DC Controller with Margining and Tracking. The ADP1822 is a versatile and inexpensive synchronous buck PWM controller. The converter power input voltage range is 1 V to 24 V, while the ADP1822 controller is specified from 3.0 V to 5.5 V. The ADP1822 free-running frequency is logic-selectable at either 300 kHz or 600 kHz. Alternatively, it can be synchronized to an external clock at any frequency between 300 kHz and 1.2 MHz
