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TOP257PG - TOPSwitch-HX Offline Switcher IC

The TOP257PG is a high-performance offline switcher IC from Power Integrations' TOPSwitch®-HX family, designed for isolated flyback power supply applications up to 41W. This integrated solution combines a 700V power MOSFET with advanced control circuitry, delivering reliable AC-DC conversion with comprehensive fault protection.

Key Features

  • High Voltage Capability: 700V breakdown voltage for universal input applications
  • 41W Power Output: Suitable for medium-power offline converters
  • Integrated Protection: Current limiting, over-temperature, and over-voltage protection
  • Efficient Switching: 66kHz switching frequency with 78% duty cycle
  • Isolated Topology: Flyback configuration for safe output isolation
  • Wide Operating Range: -40°C to 150°C junction temperature
  • Through-Hole Package: 8-DIP format for easy prototyping and manufacturing

Applications

  • AC-DC power adapters and chargers
  • Industrial control power supplies
  • Auxiliary power supplies
  • Consumer electronics
  • LED lighting drivers
  • Home appliances

Quality & Compliance

This product is RoHS compliant and sourced directly from authorized Power Integrations distribution channels, ensuring full traceability and authenticity. All components come with manufacturer documentation and meet international quality standards for aerospace, industrial, automotive, medical, and telecommunications applications.

Why Choose This IC?

The TOP257PG offers designers a proven, cost-effective solution for offline power conversion with minimal external components. Its integrated protection features reduce design complexity while ensuring reliable operation across demanding environmental conditions. Backed by Power Integrations' reputation for quality and long product lifecycles, this IC is ideal for applications requiring sustained availability and regulatory compliance.

Product attributes Property Value
Manufacturer Power Integrations
Product Series TOPSwitch®-HX
Packaging Tube |
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 700V
Topology Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 78%
Frequency - Switching 66kHz
Power (Watts) 41 W
Fault Protection Current Limiting, Over Temperature, Over Voltage
Control Features -
Operating Temperature -40°C ~ 150°C (TJ)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 8-DIP (0.300", 7.62mm), 7 Leads
Supplier Device Package 8-PDIP-C
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY