General Description
The AT9173 is a voltage regulator which could convert the input voltage ranging from 1.8V to 5V to an output voltage that user settled. The regulator can provide sourcing or sinking current.The AT9173, used in conjunction with series termination resistors, provides an excellent voltage source for active termination schemes of high speed transmission lines as those seen in high speed memory buses and distributed backplane designs.

FEATUREs
Support Both DDR I (1.25VTT) and DDR II (0.9VTT) Requirements
Capable of Sourcing and Sinking Current
Current-limiting Protection
Thermal Protection
Integrated Power MOSFETs
Generates Termination Voltages for SSTL-2
High Accuracy Output Voltage at Full-Load
Adjustable V OUT by External Resistors
Minimum External Components
Shutdown for Standby or Suspend Mode Operation with High-impedance Output

APPLICATIONs
DDRI/DDRII Memory Termination Supply
Active Termination Buses
Desktop PC,NoTebook,Server and workstation
Graphic Card
Set Top Box
Embedded System