Description
The SC1189 combines a synchronous voltage mode controller with two low-dropout linear regulators providing most of the circuitry necessary to implement three DC/DC converters for powering advanced microprocessors such as Pentium®III.

Features
◆ Synchronous design, enables no heatsink solution
◆ 95% efficiency (switching section)
◆ 5 bit DAC for output programmability
◆ Designed for Intel Pentium® III requirements
◆ 1.25V, 2.5V short circuit protected linear controllers
◆ Linear controllers adjustable to 1.8V chipset.
◆ VRM 8.5 Compliant
◆ VRM 8.4 Compliant (1.3V to 1.8V)
◆ 1.0% accuracy (1.6V to 1.8V)
◆ On Chip Power Good Signal
◆ Available in Lead free package, fully WEEE and RoHS compliant.

Applications
◆ Pentium®III microprocessor supplies
◆ 1.050V to 1.825V microprocessor supplies
◆ Programmable triple power supplies