RT9026GQW

Overview

The RT9026GQW is a DDR bus termination regulator manufactured by Richtek USA Inc. It functions as a sink/source tracking regulator designed for low-cost systems with minimal external components. The device features a high-speed operational amplifier to ensure fast load transient response, requiring only 20µF of ceramic output capacitance. It supports remote sensing and includes integrated sleep-state controls for VTT and VTTREF during S3 suspend and S5 shutdown states. The component operates within an input voltage range of 3.15V to 5.5V and provides a single positive adjustable output in an 8-SOP-EP package.

Feature Summary

• High-speed operational amplifier for rapid load transient response
• Integrated sleep-state controls for S3 suspend and S5 shutdown modes
• Supports remote sensing functionality for accurate regulation
• Designed for low external component count requirements

Applications

• DDRI/II/III memory termination
• Low-power DDRIII/DDRIV VTT bus termination
• SSTL-2 and SSTL-18 termination circuits
• HSTL termination applications

Procurement Notes

Verify the specific suffix GQW against the manufacturer's current datasheet to confirm pinout and thermal pad configuration. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Check for end-of-life notifications or product change notices that may affect long-term availability. Ensure the selected package variant matches the PCB footprint design specifications exactly.

Selection Notes

Select this component for designs requiring precise DDR bus termination with minimal passive component usage. The integrated sleep controls simplify power management sequences for system suspend and shutdown states. Verify that the required output current and input voltage range align with the target memory interface specifications. Consider the thermal performance of the SOP-8 exposed pad package for the intended operating environment.

Part Context

The RT9026 series belongs to Richtek's portfolio of specialized power management ICs targeting memory subsystems. This family addresses the stringent timing and accuracy requirements of DDR memory interfaces. The RT9026 specifically focuses on providing stable VTT termination while maintaining compatibility with JEDEC standards for various DDR generations.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the RT9026GSP variant from Richtek USA Inc., which shares the same core functionality but utilizes an 8-SOP-EP package.