RT9173A中文资料峰值负载能力为 3A 的总线终端电压调节器数据手册Richtek规格书

描述 Description

The RT9173/A 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 RT9173/A, 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.

特性 Features

• Support Both DDR 1 (1.25VTT) and DDR 2(0.9VTT) Requirements
• Capable of Sourcing and Sinking 3A Peak Current
• Thermal Protection
• Generates Termination Voltages for SSTL-2
• Adjustable VOUT by External Resistors
• Shutdown for Standby or Suspend ModeOperation with High-impedance Output
• RoHS Compliant and 100% Lead (Pb)-Free

应用 Application

• DDR Memory Termination
• Supply Splitter
• 笔记型计算机
• 主板