THX208 Switching power supply controller integrated circuit SOP-6

This is a high-performance current mode PWM controller. designed for High-cost performance AC/DC converter design. It Delivers close to 4W over a wide voltage range of 85V-265V continuous output power and optimized high rationality circuit with Bipolar fabrication process for high performance and it saves the overall cost of the product to the greatest extent.



Features

• Built-in 700V high-voltage power switch tube, very few peripheral components
  
• Latch pulse width modulation, pulse-by-pulse current limit detection
• Low output frequency reduction function, no output power consumption can be lower than 0.25W
• Built-in slope and feedback compensation function
• Independent upper limit current detection controller, real-time processing of overcurrent and overload of the controller
• Off-cycle emitter bias output, which improves the withstand voltage of the power tube.
• Built-in current limit resistor with temperature compensation, precise current limit
• Built-in thermal protection circuit
• Use the amplification effect of the switching power tube to complete the start-up, and the power consumption of the start-up resistor is reduced by more than 10 times.
• Minimal external components
• Low startup and operating current
• VCC overvoltage automatic limit
• Wide voltage output power up to 3.8W, narrow voltage output power up to 4.5W or more

Resources

Technical Datasheet

Pinouts

Applications

• Portable adapters (such as travel chargers, external power boxes, etc.)
• Lightweight and stylish mobile device power supply (such as MP3, WALKMAN, etc.)