THX203H Switching Power PWM Controller DIP8 IC


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PWM controller of high-performance current mode is specially designed for AC/DC transformer with high performance and price ratio, which supplies continuous output power of 12W within the range of wide-voltage between 85V and 265V, the output power of peak value can be up to 18W Often used in inductor heater and charger applications.


  • Set-in high-voltage power transistor of 700V and few peripheral components
  • With the function of output frequency reduction, the non-output power consumption can be less than 0.3W.
  • Inner-built ramp and anti-feedback compensation function
  • Set-in current limit resistance with temperature compensation, which makes the current limit precise
  • Set-in heat protection circuit

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