LYT4211E

LYT4211E - High-Performance AC-DC Offline Switching IC

The LYT4211E from Power Integrations is a versatile member of the LYTSwitch-4 series, designed for isolated AC-DC power conversion applications up to 12W. This integrated switching IC combines flyback, step-down (buck), and step-up (boost) topologies in a single compact eSIP-7C package, delivering exceptional efficiency and reliability for industrial, consumer, and telecommunications power supplies.

Key Features & Benefits

• Multi-Topology Support: Flyback, Buck, and Boost configurations for design flexibility
• High Voltage Capability: 725V breakdown voltage for universal AC input designs
• Integrated Switching: Internal MOSFET eliminates external components and reduces BOM cost
• Wide Operating Range: -40°C to 150°C junction temperature for harsh environments
• High Efficiency: 99.9% duty cycle capability and 140kHz switching frequency optimize performance
• Compact Footprint: Through-hole eSIP-7C package with exposed pad for superior thermal management
• RoHS Compliant: Meets environmental standards for global market access

Typical Applications

• LED driver power supplies
• Auxiliary power for industrial equipment
• Smart home and IoT device chargers
• Standby and bias supplies
• Consumer electronics adapters

Why Choose LYT4211E?

Power Integrations' LYTSwitch-4 family delivers industry-leading integration, reducing design complexity and time-to-market. The LYT4211E offers excellent line and load regulation, comprehensive protection features, and proven long-term reliability backed by full manufacturer documentation and traceability.

Authorized distributor stock available with full technical support, reference designs, and long lifecycle commitment.

• LYT4211E.pdf