RC5058

www.fairchildsemi.com RC5058 High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms Features Programmable output for Vcore from 1.3V to 3.5V using an integrated 5-bit DAC Controls adjustable linears for Vagp (selectable 1.5V/3.3V), Vclock (2.5V), and Vtt (1.5V) or Vnorthbridge (1.8V) Meets VRM specification with as few as 5 capacitors Meets 1.550V +40/-70mV over initial tolerance, temperature and transients Remote sense Programmable Active Droop™ (Voltage Positioning) Drives N-Channel MOSFETs Overcurrent protection using MOSFET sensing 85% efficiency typical at full load Integrated Power Good and Enable/Soft Start functions 24 pin SOIC package Applications Power supply for Pentium® III Camino Platform Power supply for Pentium III Whitney Platform VRM for Pentium III processor Programmable multi-output power supply Description The RC5058 is a synchronous mode DC-DC controller IC which provides a highly accurate, programmable set of output voltages for multi-voltage platforms such as the Intel Camino, and provides a complete solution for the Intel Whitney and other high-performance processors. The RC5058 features remote voltage sensing, independently adjustable current limit, and a proprietary Programmable Active Droop™ for optimal converter transient response. The RC5058 uses a 5-bit D/A converter to program the output voltage from 1.3V to 3.5V. The RC5058 uses a high level of integration to deliver load currents i...