RT7310GE

Overview

The RT7310GE is a high power factor constant current LED driver controller optimized for compatibility with phase-cut dimmers. It features active PFC and supports typical flyback applications. The device utilizes primary-side regulation (PSR) to control output current accurately without requiring a shunt regulator or opto-coupler at the secondary side, thereby reducing external component count, cost, and board volume.

Feature Summary

• Optimized for compatibility with phase-cut dimmers
• Active Power Factor Correction (PFC)
• Primary-Side Regulation (PSR) eliminates need for opto-coupler

Applications

• Typical Flyback Applications
• LED Driver Design
• Phase-Cut Dimmable Lighting Systems

Procurement Notes

Verify the specific suffix 'GE' against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure design requirements align with the documented active PFC and phase-cut dimming capabilities. Confirm RoHS compliance status through the latest environmental declaration provided by Richtek USA Inc.

Selection Notes

Select this controller when designing LED drivers that require high power factor correction and seamless integration with existing phase-cut dimmers. The primary-side regulation architecture is suitable for designs aiming to minimize bill of materials by removing secondary-side feedback components like opto-couplers and shunt regulators.

Part Context

The RT7310 series belongs to Richtek's portfolio of AC-DC offline switchers designed for lighting applications. Unlike the discontinued R7731AGE which focuses on general flyback conversion, the RT7310 specifically targets LED driving with integrated PFC and dimming compatibility features.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify if the RT7304GE serves as a functional alternative based on specific circuit topology requirements.