AT9173

www.DataSheet4U.com Technology Corporation AT9173 Bus Termination Regulator Release Date: Nov. 2004 Revision: V 1.2 DataSheet 4 U .com www.DataSheet4U.com Technology Corporation 1.General Description AT9173 V1.2 Bus Termination Regulator The AT9173 is a voltage regulator which could convert the input voltage ringing from 1.6V to 6V 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. The voltage output of the regulator can be used as a termination voltage for DDR SDRAM. Current limits in both sourcing and sinking mode, plus on-chip thermal shutdown make the circuit tolerant of the output fault conditions. 2. 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 VOUT by External Resistors Minimum External Components Shutdown for Standby or Suspend Mode Operation with High-impedance Output 3. Application DDR Memory Termination Supply Active Termination Buses Desktop PC/AGP Graphics Supply Splitter Set Top Box/IPC -1DataSheet 4 U .com www.DataSheet4U.com Technology ...