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LYT4326E - LYTSwitch-4 AC-DC Offline Switcher IC

The LYT4326E from Power Integrations is a high-performance AC-DC offline switcher IC from the LYTSwitch-4 family, designed for isolated power conversion applications up to 35W. This versatile controller supports flyback, step-down (buck), and step-up (boost) topologies with 725V breakdown voltage and 140kHz switching frequency.

Key Features & Benefits

  • Multi-Topology Support: Flyback, buck, and boost configurations for design flexibility
  • High Voltage Capability: 725V breakdown voltage for robust performance
  • Integrated Switch: Internal switching element simplifies design and reduces BOM
  • Wide Operating Range: -40°C to 150°C junction temperature for industrial applications
  • Compact Package: Through-hole eSIP-7C with exposed pad for efficient thermal management
  • High Efficiency: 99.9% duty cycle capability maximizes power conversion efficiency

Typical Applications

Ideal for LED drivers, auxiliary power supplies, smart home devices, industrial controls, and consumer electronics requiring reliable isolated AC-DC conversion with minimal external components.

Authorized Distributor

We provide 100% authentic Power Integrations components with full manufacturer documentation, traceability, and long lifecycle support. All units ship from authorized stock with quality guarantees.

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) 35 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