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SC1109

Part Number	SC1109
Manufacturer	Semtech Corporation
Description	Synchronous PWM Controller
Published	Apr 8, 2005
Detailed Description	SC1109 Synchronous PWM Controller with Dual Low Dropout Regulator Controllers POWER MANAGEMENT Description Features T...
Datasheet	SC1109 PDF File

Overview

SC1109 Synchronous PWM Controller with Dual Low Dropout Regulator Controllers POWER MANAGEMENT Description Features 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 Dual linear controllers power the chip set and clock circuitry.
The SC1109A switching section features lossless current sensing, while SC1109C provides programmable over current limit.
SC1109 also utilizes latched driver outputs for enhanced noise immunity.
SC1109A and SC1109C operate at a fixed frequency of 200...

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