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TOP234G-TL - TOPSwitch-FX Offline Switcher IC

The TOP234G-TL from Power Integrations is a high-performance offline switcher IC from the renowned TOPSwitch-FX family, designed for isolated AC/DC power conversion applications up to 30W. This integrated solution combines a 700V power MOSFET, oscillator, high-voltage switched current source, current limit, and thermal shutdown circuitry on a single chip.

Key Features & Benefits

  • Integrated Design: Built-in 700V MOSFET reduces component count and simplifies PCB layout
  • Wide Frequency Range: 66kHz to 132kHz switching frequency for flexible design optimization
  • Comprehensive Protection: Current limiting, over-temperature, and over-voltage fault protection ensures reliable operation
  • High Efficiency: 78% duty cycle maximizes power delivery and minimizes losses
  • Compact Package: Surface mount SMD-8B (8-pin gull wing) saves board space
  • Wide Operating Range: -40°C to 150°C junction temperature for demanding environments

Typical Applications

Perfect for cost-effective, space-constrained power supplies in consumer electronics, industrial controls, smart home devices, LED lighting drivers, and auxiliary power systems requiring galvanic isolation.

All specifications are guaranteed by Power Integrations. This is an authorized distribution product with full traceability and lifecycle support.

Product attributes Property Value
Manufacturer Power Integrations
Product Series TOPSwitch®-FX
Packaging |
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 ~ 132kHz
Power (Watts) 30 W
Fault Protection Current Limiting, Over Temperature, Over Voltage
Control Features Frequency Control
Operating Temperature -40°C ~ 150°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 8-SMD (7 Leads), Gull Wing
Supplier Device Package SMD-8B