DESCRIPTION

The SC1172/3 combines a synchronous voltage mode controller with a low-dropout linear regulator providing most of the circuitry necessary to implement two DC/DC converters for powering advanced microprocessors such as Pentium® II (Klamath) or Deschutes.

FEATURES

• Synchronous design, enables no heatsink solution

• 95 efficiency (switching section)

• 5 bit DAC for output programmability

• On chip power good function

• Designed for Intel Pentium®II VRM8.1 requirements

• 1.5V or Adj. @ 1 for linear section

APPLICATIONS

• Pentium®ll or Deschutes microprocessor supplies

• Flexible motherboards

• 1.3V to 3.5V microprocessor supplies

• Programmable dual power supplies