The LYT4318E2 is a high-efficiency, offline LED driver IC from Power Integrations, part of their LYTSwitch-4 family. It is designed for single-stage, power factor corrected LED lighting applications, providing a simple and efficient solution for driving LED lamps and luminaires.

Applications

• LED bulbs
• LED tubes
• Downlights
• Street lights
• Commercial lighting

Features

• High efficiency (>90%)
• Accurate constant current regulation
• Integrated 725 V MOSFET
• Single-stage power factor correction (PFC)
• Thermal foldback for over-temperature protection
• Input overvoltage and undervoltage protection
• Output overvoltage and overcurrent protection

Benefits

• Reduces energy consumption and lowers electricity costs due to high efficiency.
• Ensures consistent brightness and extends LED lifespan through accurate current regulation.
• Simplifies design and reduces component count with the integrated MOSFET.
• Meets energy efficiency standards and regulations with power factor correction.
• Enhances system reliability with comprehensive protection features.

Specifications

The LYT4318E2 operates with a universal input voltage range of 85 VAC to 265 VAC. It delivers up to 18 W of output power. The IC incorporates a 725 V MOSFET and provides comprehensive protection features, including overvoltage, overcurrent, and over-temperature protection. It is available in an eSIP-7C package.

The LYT4318E2 significantly reduces the complexity of LED driver design by integrating a high-voltage MOSFET and advanced control circuitry into a single package. Its high efficiency minimizes heat dissipation, allowing for smaller and more cost-effective thermal management solutions. The accurate constant current regulation ensures consistent LED brightness and prolongs LED lifespan. The comprehensive protection features enhance system reliability and prevent damage from electrical faults or thermal overloads. The LYT4318E2 is an ideal solution for a wide range of LED lighting applications, offering a balance of performance, reliability, and ease of design.