RT8477AGSP

Overview

The RT8477AGSP is a DC-DC controller designed for LED driver applications, manufactured by Richtek USA Inc. It supports both buck and boost topologies with an input voltage range of 4.5V to 50V. The device features analog and PWM dimming capabilities and operates at a switching frequency of 380kHz. Packaged in an 8-SOP-EP format, it functions within a temperature range of -40°C to +85°C.

Feature Summary

• Supports buck and boost converter topologies for versatile LED driving configurations
• Enables precise light control through integrated analog and PWM dimming interfaces

Applications

• LED backlighting systems
• General illumination circuits

Procurement Notes

Verify component status before procurement as the RT8477AGSP is officially listed as obsolete with an End-of-Life date of September 2025. Confirm availability through authorized distributors or check for valid replacement part numbers from the same manufacturer to ensure supply chain continuity for ongoing production needs.

Selection Notes

Select this controller when designing LED drivers requiring wide input voltage support up to 50V. Ensure the application utilizes either buck or boost topology. Verify that the system design accommodates the specific 380kHz switching frequency and requires compatibility with both analog and pulse-width modulation dimming signals for optimal performance.

Part Context

This component belongs to the Richtek PMIC family, specifically categorized under LED drivers. It serves as a dedicated controller IC rather than a complete power stage solution, lacking internal switches. It is intended for use in power management designs where external power components are required to handle the current load.

Replacement Considerations

RT8474AGSP