RT8239CGQW

Overview

The RT8239CGQW is a high-efficiency main power supply controller designed for notebook computers. It integrates two synchronous step-down PWM controllers with adjustable output voltages ranging from 2 V to 5.5 V. The device operates within an input voltage range of 5.5 V to 25 V and supports switching frequencies between 200 kHz and 466 kHz. It is housed in a WQFN-20 package (3x3 mm) and functions reliably across temperatures from -40°C to +85°C.

Feature Summary

• Integrates dual synchronous buck converters for efficient multi-rail power generation
• Supports wide input voltage ranges suitable for battery-powered systems
• Includes fixed linear regulators alongside the switching controllers

Applications

• Main power supply control for notebook computers
• Multi-output power distribution in portable electronics
• Battery-operated system voltage regulation

Procurement Notes

Verify the specific suffix 'CGQW' against the manufacturer's official datasheet to confirm pinout, thermal pad configuration, and RoHS compliance status. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the revision level to guarantee compatibility with existing design files.

Selection Notes

Select this component when designing power stages for notebooks requiring integrated dual buck and linear regulation. Verify that the required output voltage range falls within the 2 V to 5.5 V limit. Confirm that the operating temperature environment stays within the specified -40°C to +85°C range for reliable performance.

Part Context

This part belongs to the Richtek RT8239A/B/C family of high-efficiency power controllers. These devices are specifically engineered for portable computing applications where space and efficiency are critical constraints. The family shares similar functional architectures but may differ in specific electrical characteristics or packaging options.

Replacement Considerations

Check for direct substitutes within the same product family, such as RT8239AQW or RT8239BN-A, ensuring pin compatibility and electrical specifications match the original design requirements before substitution.