SC1108CS, SC1109, SC11091CQ/AAA Selling Leads, Datasheet
MFG:1208 Package Cooled:SIG D/C:02+
SC1108CS, SC1109, SC11091CQ/AAA Datasheet download
Part Number: SC1108CS
MFG: 1208
Package Cooled: SIG
D/C: 02+
SC1108CS, SC1109, SC11091CQ/AAA
- Table of contents:
Info of SC1108CS
Info of SC1109
Info of SC11091CQ/AAA
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About SC100
PDF/DataSheet Download
Datasheet: SC100
File Size: 2737062 KB
Manufacturer: Motorola, Inc
Download : Click here to Download
About SC1109
PDF/DataSheet Download
Datasheet: SC1109
File Size: 228449 KB
Manufacturer: SEMTECH [Semtech Corporation]
Download : Click here to Download
About SC100
PDF/DataSheet Download
Datasheet: SC100
File Size: 2737062 KB
Manufacturer: Motorola, Inc
Download : Click here to Download
SC1109 General 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.
The SC1109 switching section features lossless current sensing and latched driver outputs for enhanced noise immunity. It operates at a fixed frequency of 200kHz, the output voltage is internally fixed at 1.2V.
The SC1109 linear sections are low dropout regulators designed to track the 3.3V power supply when it turns on or off.
SC1109 Maximum Ratings
| Parameter | Symbol | Maximum | Units |
| VCC, to GND | -0.3 to7 | V | |
| STBY to GND | -0.3 to +7 | V | |
| BST to GND | -0.3 to 15 | V | |
| PHASE to GND | -1 to +8 | V | |
| LDOSx | -0.3 to 5 | V | |
| Operating Temperature Range | TA | 0 to +70 | °C |
| Junction Temperature Range | TJ | 0 to +125 | °C |
| Storage Temperature Range | TSTG | -65 to +150 | °C |
| Lead Temperature (Soldering) 10 seconds | TL | 300 | °C |
| Thermal Impedance Junction to Ambient | JA | 130 | °C/W |
| Thermal Impedance Junction to Case | JC | 30 | °C/W |
SC1109 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
SC1109 Typical Application
· Pentium® III Motherboards
· Triple power supplies
SC1109 Connection Diagram
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