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LYT4218E - Power Integrations LYTSwitch-4 AC-DC Offline Switching IC

The LYT4218E is a high-performance isolated AC-DC offline switching IC from Power Integrations' LYTSwitch-4 family, designed for flyback, step-down (buck), and step-up (boost) topologies. With 78W output power capability and 725V breakdown voltage, this integrated switcher delivers reliable performance for industrial, consumer, and commercial power supply applications.

Key Features:

  • 78W Output Power - Suitable for mid-power AC-DC conversion applications
  • 725V Breakdown Voltage - High-voltage capability for universal input designs
  • 140kHz Switching Frequency - Optimized for efficiency and compact transformer design
  • 99.9% Duty Cycle - Maximizes power delivery and efficiency
  • Isolated Output - Built-in galvanic isolation for safety compliance
  • Wide Operating Temperature - -40°C to 150°C (TJ) for demanding environments
  • eSIP-7C Package - Through-hole mounting with exposed pad for thermal management

Applications:

  • LED lighting drivers
  • Industrial power supplies
  • Home appliances
  • Auxiliary power supplies
  • Battery chargers
  • Smart home devices

Why Choose LYT4218E?

Power Integrations' LYTSwitch-4 family integrates a high-voltage power MOSFET, oscillator, and control circuitry into a single IC, reducing component count and simplifying design. The LYT4218E offers excellent line and load regulation with minimal external components, making it ideal for cost-sensitive applications requiring reliable isolated power conversion.

Authorized Distributor - We provide 100% authentic Power Integrations components with full manufacturer traceability, documentation, and warranty support. Long lifecycle availability guaranteed.

Product attributes Property Value
Manufacturer Power Integrations
Product Series LYTSwitch™-4
Packaging |
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 725V
Topology Flyback, Step-Down (Buck), Step-Up (Boost)
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 99.9%
Frequency - Switching 140kHz
Power (Watts) 78 W
Fault Protection -
Control Features -
Operating Temperature -40°C ~ 150°C (TJ)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 7-SSIP, 6 Leads, Exposed Pad, Formed Leads
Supplier Device Package eSIP-7C
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY