RT9040GQW(2)

Overview

The RT9040GQW(2) is a DDR termination regulator manufactured by Richtek USA Inc. It provides precise voltage regulation for DDR memory bus termination applications. The device operates within an input voltage range of 1V to 5.5V and delivers an output voltage adjustable from 0.8V to 2.5V. It features a maximum output current capability of 500mA with a typical dropout voltage of 0.5V at full load. The component includes built-in protection mechanisms such as thermal shutdown and current limiting, ensuring reliable operation across industrial temperature ranges.

Feature Summary

• Specialized linear regulator designed specifically for DDR memory bus termination
• Adjustable output voltage range supporting various DDR standards
• Integrated thermal shutdown and current limit protection functions

Applications

• DDR SDRAM bus termination circuits
• Server and workstation memory subsystems
• Embedded computing systems requiring stable memory power rails

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest datasheet to confirm pinout compatibility and electrical characteristics. Ensure that the procurement channel provides original components with traceable documentation. Check for any obsolescence notices or lifecycle status updates prior to finalizing orders to mitigate supply chain risks associated with end-of-life products.

Selection Notes

Select this component when designing DDR memory interfaces requiring dedicated termination voltage regulation. Consider the 500mA output current capacity relative to the target memory density and speed requirements. Evaluate the thermal performance within the intended enclosure environment due to the linear regulation topology. Confirm that the available input voltage rail aligns with the specified operating range for optimal efficiency.

Part Context

This part belongs to the RT9040 series of DDR termination regulators from Richtek. It complements other PMIC solutions in server and high-performance computing platforms. The family focuses on providing stable reference voltages for memory modules, ensuring signal integrity and compliance with industry specifications for data transmission reliability in complex digital systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify cross-reference information directly with the manufacturer or authorized distributors before considering alternative components.