RT8205CGQW

Overview

The RT8205CGQW is a discontinued notebook power system controller manufactured by Richtek USA Inc. It features a 24-WQFN (4x4) package with exposed pad and operates within an input voltage range of 6V to 25V. The device provides two output channels, delivering fixed voltages of 3.3V and 5.5V, alongside an adjustable output ranging from 2V to 5.5V. Designed for surface mount installation, it functions reliably across a temperature range of -40°C to 85°C.

Feature Summary

• Integrated controller architecture designed specifically for notebook computer power systems
• Dual-output capability supporting multiple voltage rails simultaneously
• Surface-mount construction in a compact 24-pin WQFN package

Applications

• Notebook computer main power supply control
• Portable computing device power management
• Multi-rail DC-DC converter systems for laptops

Procurement Notes

This component has reached End-of-Life status with an official discontinuation date of September 2025. Verify current availability through authorized distributors as stock may be limited or exhausted. Confirm that the specific suffix CGQW matches your design requirements before procurement, as obsolete parts often require careful lifecycle management and potential redesign planning.

Selection Notes

Select this part only if legacy compatibility with existing notebook designs is required. Evaluate alternative controllers if new product development is underway, given the discontinued status. Ensure the 6V to 25V input range aligns with your battery or adapter specifications. The 24-WQFN footprint must be accommodated in your PCB layout constraints.

Part Context

The RT8205 belongs to Richtek's portfolio of specialized power management integrated circuits tailored for mobile computing platforms. This series focuses on providing efficient voltage regulation for complex multi-rail architectures found in modern laptops. The CGQW variant denotes the specific packaging and thermal characteristics suitable for high-density board assemblies.

Replacement Considerations

The TPS5102IDBTR from Texas Instruments is listed as a similar replacement option. Verify pinout compatibility and electrical parameter alignment before substitution.