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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) 50 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-7F

LYT4317L - Power Integrations LYTSwitch-4 AC-DC Converter IC

The LYT4317L is a high-performance, isolated AC-DC converter IC from Power Integrations' LYTSwitch-4 family, designed for multi-topology offline switching applications up to 50W. This integrated solution combines a 725V power MOSFET with advanced control circuitry, delivering exceptional efficiency and reliability for industrial, telecommunications, and power supply designs.

Key Features & Benefits

  • Multi-Topology Support: Flyback, Step-Down (Buck), and Step-Up (Boost) configurations for design flexibility
  • High Voltage Capability: 725V breakdown voltage for universal input applications
  • Efficient Switching: 140kHz switching frequency with 99.9% maximum duty cycle
  • Isolated Output: Galvanic isolation for safety-critical applications
  • Integrated Power Switch: Reduces external component count and simplifies design
  • Wide Operating Range: -40°C to 150°C junction temperature for harsh environments
  • Compact Package: eSIP-7F (7-SSIP) through-hole package with exposed pad and formed leads

Typical Applications

  • Industrial power supplies and automation equipment
  • Telecommunications infrastructure and networking gear
  • LED lighting drivers and ballasts
  • Auxiliary power supplies for motor drives
  • Smart home and IoT device power modules
  • Battery chargers and adapters

Why Choose LYT4317L?

The LYT4317L offers design engineers a proven, cost-effective solution for offline power conversion with full manufacturer documentation and traceability. As an authorized distributor, we guarantee 100% authentic Power Integrations components with long lifecycle availability to support your production programs and mitigate obsolescence risk.

Authorized Distributor Guarantee: All LYT4317L units ship with full manufacturer documentation, authenticity certification, and traceability. Global shipping available through authorized channels with design-in support and reference designs.