Description

The RT9173B regulator is an electronic component model categorized under IC Chips. It can convert voltage supplies ranging from 1.7V to 6V into a desired output voltage of which is adjusted by two external voltage divider resistors. The regulator can source or sink up to 2A of current while regulating an output voltage to within 40mV. It can be used as a termination voltage for DDR SDRAM and provides an excellent voltage source for active termination schemes of high-speed transmission lines such as high-speed memory buses and distributed backplane designs.

Specifications and features

• Support for both DDR I (1.25VTT) and DDR II (0.9VTT) requirements.
• Available in SOP-8 and TO-252-5 packages.
• 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.
• RoHS compliant and 100% lead (Pb)-free.

Application Scenarios

The RT9173B regulator finds its usage in the following scenarios:

• DDR memory termination supply.
• Active termination buses.
• Desktop PC/AGP graphics.
• Set-top box/IPC.
• Supply Splitter.

Comparison

• Can convert voltage supplies ranging from 1.7V to 6V into a desired output voltage.
• Capable of sourcing and sinking high currents.
• Generates termination voltages for SSTL-2.
• Adjustable VOUT by external resistors.
• Minimum external components required.

• Only compatible with DDR I and DDR II requirements.
• Available in only two packages: SOP-8 and TO-252-5.