SC1109: Synchronous PWM Controller With Dual Low-Dropout Regulator Controllers | Semtech

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 pro- vides 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 cur- rent limit. SC1109 also utilizes latched driver outputs for enhanced noise immunity. SC1109A and SC1109C oper- ate at a fixed frequency of 200kHz, and the SC1109B is available at a fixed frequency of 500kHz. The VTT output voltage is internally fixed at 1.2V By Semtech Corporation
SC1109 's PackagesSC1109 's pdf datasheet
SC1109ACSTR
SC1109ACSTRT




SC1109 Pinout, Pinouts
SC1109 pinout,Pin out
This is one package pinout of SC1109,If you need more pinouts please download SC1109's pdf datasheet.

SC1109 Application circuits
SC1109 circuits
This is one application circuit of SC1109,If you need more circuits,please download SC1109's pdf datasheet.


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SC1109 Application Notes SC1109 RoHS SC1109 Circuits SC1109 footprint