Various RT9173ACM5 - 1.5A-3A Bus Termination Regulator free download

File name RT9173ACM5 - 1.5A-3A Bus Termination Regulator.pdf

RT9173/A 1.5A/3A Bus Termination Regulator General Description Features The RT9173/A regulator is designed to convert Support Both DDR 1 (1.25VTT) and DDR 2 voltage supplies ranging from 1.8V to 6V into a (0.9VTT) Requirements desired output voltage which adjusted by two external Power TO-263-5 and SOP-8 Packages resistors, voltage divider. The regulator is capable of Capable of Sourcing and Sinking Current sourcing or sinking up to 1.5A/3A of current while 1.5A/3A regulating an output voltage to within 2% or less. Current-limiting Protection Thermal Protection The RT9173/A, used in conjunction with series Integrated Power MOSFETs termination resistors, provides an excellent voltage Generates Termination Voltages for SSTL-2 source for active termination schemes of high speed High Accuracy Output Voltage at Full-load transmission lines as those seen in high speed Adjustable VOUT by External Resistors memory buses and distributed backplane designs. Minimum External Components The voltage output of the regulator can be used as a Shutdown for Standby or Suspend Mode termination voltage for DDR SDRAM. Operation with High-impedance Output Current limits in both sourcing and sinking mode, plus on-chip thermal shutdown make the circuit tolerant of Pin Configurations the output fault conditions. Part Number Pin Configurations Applications RT9173ACM5 TOP VIEW (Plastic TO-263-5) 1. VIN Computers 2. GND Disk Drives 3. VCNTL (TAB) CD-ROM 1 2 3 4 5 4. REFEN Supply Splitter 5. VOUT Graph Card RT9173CS TOP VIEW Ordering Information