RT8239AZQW

Overview

The RT8239AZQW is a high-efficiency, main power supply controller for notebook computers manufactured by Richtek USA Inc. It utilizes a Buck topology with two outputs and operates within a switching frequency range of 200 kHz to 466 kHz. The device supports an output voltage range of 2 V to 5.5 V and provides an output current of 4 mA. Designed for surface mount installation in a WQFN-20 package, it functions reliably between -40°C and +85°C.

Feature Summary

• High-efficiency main power supply control architecture
• Dual-output capability for complex power distribution
• Adjustable switching frequency for optimized performance

Applications

• Notebook computer main power supplies
• Portable computing systems
• Battery-powered electronic devices

Procurement Notes

Verify component authenticity through authorized distributors or the manufacturer directly. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) prior to assembly. Ensure proper handling procedures are followed to prevent electrostatic discharge damage during storage and installation processes.

Selection Notes

Select this controller for applications requiring dual-output buck conversion in space-constrained portable designs. Evaluate thermal management requirements given the WQFN-20 package. Compare against single-output alternatives if only one rail is necessary to optimize board area and cost efficiency.

Part Context

This component belongs to the Richtek RT8239 family of power management ICs. It serves as a specialized controller for notebook power architectures, distinct from integrated converters like the RT8068 series. The part number suffix AZQW indicates specific packaging and temperature grade variations within the product line.

Replacement Considerations

RT8239BZQW is a documented variant within the same family. Verify electrical parameter compatibility before substitution.