RT8239BZQW

Overview

The RT8239BZQW is a high-efficiency main power supply controller designed for notebook computers, manufactured by Richtek. It utilizes a Buck topology and features two output channels with an adjustable voltage range of 2 V to 5.5 V. The device operates within a switching frequency range of 200 kHz to 466 kHz and supports a maximum output current of 4 mA. It functions reliably across a temperature range of -40°C to +85°C. The component is housed in a WQFN-20 package and is suitable for surface mount installation.

Feature Summary

• Designed as a main power supply controller specifically for notebook computer applications
• Features dual output channels with adjustable voltage capabilities
• Utilizes Buck topology for high efficiency power conversion

Applications

• Notebook computer main power supply systems
• Portable computing devices requiring efficient power management
• Embedded power control circuits for mobile platforms

Procurement Notes

Verify the specific suffix ZQW against official Richtek documentation to confirm package type and tape/reel specifications. Ensure compatibility with WQFN-20 footprint requirements during PCB layout. Confirm moisture sensitivity level handling procedures are followed prior to assembly to prevent internal damage during soldering processes.

Selection Notes

Select this controller when designing main power rails for notebooks requiring dual outputs. Consider the 200 kHz to 466 kHz frequency range for filter component sizing. Evaluate the 4 mA output current limit against load requirements. Verify thermal performance within the -40°C to +85°C operating range for the target environment.

Part Context

This part belongs to Richtek's switch controller product line under PMICs. It complements other buck controllers like the RT8231BGQW but differs in output current capacity and specific application focus. The RT8239 series targets main system power rather than peripheral or memory supplies.

Replacement Considerations

The RT8239BN-A is listed as an alias for this component. Verify if the BN suffix denotes identical electrical characteristics or minor packaging variations before substitution. Cross-reference datasheet parameters strictly.