RT8476GS

Overview

The RT8476GS is a two-stage LED driver controller manufactured by Richtek USA Inc. It integrates dual gate drivers for a Boost converter as the first stage and a Buck converter as the second stage. This topology allows for flexible input voltage ranges relative to output requirements. The device functions as a DC-DC regulator designed specifically for driving LED loads with high efficiency.

Feature Summary

• Integrates dual gate drivers for independent control of boost and buck stages
• Supports step-up and step-down conversion topologies within a single controller

Applications

• LED lighting systems requiring wide input voltage ranges
• Portable devices with battery inputs needing voltage regulation
• General-purpose LED driver circuits

Procurement Notes

Verify component status before ordering, as this part may be obsolete. Confirm package type and revision level against current design requirements. Ensure compatibility with existing PCB footprints and thermal management solutions. Check official distributor channels for availability of last-time buy options if necessary.

Selection Notes

Select this controller when a single IC must handle both voltage boosting and bucking for LED applications. Consider the integrated dual-gate architecture for simplified design compared to discrete solutions. Evaluate system efficiency needs against the specific boost and buck stage capabilities documented in the datasheet.

Part Context

Richtek Technology Corporation is an analog IC company specializing in power management solutions. The RT8476 series falls under their LED driver portfolio, offering integrated control for complex power conversion tasks in lighting applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other two-stage LED controllers from Richtek or competitors based on electrical specifications and pinout compatibility.