Description

The RC5057 is a synchronous mode DC-DC controller IC which provides a highly accurate, programmable output voltage for all Pentium II & III CPU applications and other high-performance processors. The RC5057 features remote voltage sensing, adjustable current limit, and active droop for optimal converter transient response. The RC5057 uses a 5-bit D/A converter to program the output voltage from 1.3V to 3.5V.

Features

• Programmable output from 1.3V to 3.5V using an integrated 5-bit DAC

• Remote sense

• Active Droop

• 85 efficiency typical at full load

• Integrated Power Good and Enable/Soft Start functions

• Drives N-channel MOSFETs

• Overcurrent protection using MOSFET sensing

• 16 pin SOIC package

• Meets Intel Pentium II & III specifications using minimum number of external components

Applications

• Power supply for Pentium® II & III

• VRM for Pentium II & III processor

• Telecom line cards

• Routers, switches & hubs

• Programmable step-down power supply