DESCRIPTION

The SC1109 was designed for the latest high speed motherboards. It combines a synchronous voltage mode controller (switching section) with two low-dropout linear regulator controllers. The voltage mode controller provides the power supply for the system AGTL bus. The 1.8V and 2.5V linear controllers power the Chipset and

clock circuitry.

FEATURES

·  1.8V, 2.5V linear controllers

·  LDOs track input voltage within 200mV until regulation

·  Integrated drivers

·  Power Good Signal

·  Soft Start

·  Lossless Current Sense

APPLICATIONS

·  Pentium® III Motherboards

·  Triple power supplies