RT8482GQW

Overview

The RT8482GQW is a DC-DC controller from Richtek USA Inc. designed for LED driver applications. It supports both Step-Down (Buck) and Step-Up (Boost) topologies without internal switches. The device operates with an analog and PWM dimming capability at a switching frequency of 350kHz. It is housed in a 16-WQFN package with an exposed pad and functions within a junction temperature range of -40°C to 125°C.

Feature Summary

• Supports Buck and Boost converter topologies for flexible LED driving configurations
• Enables precise light control through combined analog and PWM dimming methods
• Operates at a fixed 350kHz switching frequency for efficient power management

Applications

• LED backlighting systems
• General solid-state lighting solutions

Procurement Notes

Verify the current lifecycle status, as sources indicate this part may be obsolete. Confirm RoHS compliance details directly with the manufacturer or authorized distributors, as documentation varies. Ensure the specific suffix matches your packaging requirements. Cross-reference the exact part number against official Richtek databases to avoid counterfeit components.

Selection Notes

Select this component when a non-synchronous controller capable of both buck and boost operations is required for LED applications. Consider the 350kHz frequency for balancing efficiency and component size. Verify that the external switch ratings align with the intended load current and voltage levels for the specific backlight or lighting design.

Part Context

This IC belongs to the Richtek PMIC family, specifically categorized under LED drivers. It serves as a control unit for external power stages rather than containing integrated switches. The QFN package facilitates surface-mount assembly for compact electronic designs requiring reliable power conversion for illumination purposes.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the official Richtek datasheet or contact the manufacturer directly for qualified alternatives or next-generation replacements.