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