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.

特性 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