Product Summary

The RT9173PS is a peak 3A bus termination regulator. The RT9173PS regulator is designed to convert voltage supplies ranging from 1.6V to 6V into a desired output voltage which adjusted by two external voltage divider resistors. The regulator is capable of sourcing or sinking up to 3A of peak current while regulating an output voltage to within 2% (DDR 1) and 3% (DDR 2) or less. The RT9173PS, 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.

Parametrics

RT9173PS absolute maximum ratings: (1)Input Voltage: 7V; (2)Power Dissipation: Internally Limited; (3)ESD Rating: 2kV; (4)Storage Temperature Range: -65°C to 150°C; (5)Lead Temperature (Soldering, 10 sec.): 260°C; (6)Power Dissipation, PD @ TA = 25°C TO-263-5:1.923W/TO-252-5: 1.471W/SOP-8: 0.625W; (7)Package Thermal Resistance: SOP-8, θJA: 160°C/W.

Features

RT9173PS features: (1)Support Both DDR 1 (1.25VTT) and DDR 2(0.9VTT) Requirements; (2)SOP-8, TO-252-5 and TO-263-5 Packages; (3)Capable of Sourcing and Sinking 3A Peak Current; (4)Current-limiting Protection; (5)Thermal Protection; (6)Integrated Power MOSFETs; (7)Generates Termination Voltages for SSTL-2; (8)High Accuracy Output Voltage at Full-Load; (9)Adjustable VOUT by External Resistors; (10)Minimum External Components; (11)Shutdown for Standby or Suspend Mode; (12)Operation with High-impedance Output; (13)RoHS Compliant and 100% Lead (Pb)-Free.

Diagrams

RT9173PS pin configuration