This excerpt taken from the MRVL 10-K filed Jul 2, 2007.
® Integrated Regulators. Our DSP Switcher® integrated regulators form the core of what we believe is the industrys smallest and highest-performance step-down power supply. DSP Switcher® integrated regulators are designed to provide efficiency, precision and transient response together with small solution size to provide system designers with enhanced form factor and battery life in portable equipment. Integration of power MOSFETs (metal-oxide semiconductor field-effect transistor), internal frequency compensation and single resistor output programming reduces design efforts and increases system reliability.