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