The SC1486A is a dual output constant on-time synchronous buck PWM controller optimized for cost effective mobile DDR1, DDR2 and DDR3 applications. Features include high efficiency, a fast dynamic response with no minimum on time, a REFIN input and a buffered REFOUT pin capable of sourcing 3mA. The excellent transient response means that SC1486A based solutions will require less output capacitance than competing fixed frequency converters.