[TOPONE SEMICONDUCTOR]

Overview
THX203 is a high performance current mode PWM switching power supply, Specifically designed for cost-effective AC/DC converter systems. exist Provides up to 12W connection over a wide voltage range of AC85V-265V Continuous output power, peak output power can be as high as 18W. optimized Rational circuit design combined with cost-effective Bipolar integration The circuit technology saves the overall cost of the product to the greatest extent.

FEATUREs
✦ Built-in 700V high-voltage power switch, very few peripheral devices
✦ Latch PWM, 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 switching power supply, real-time processing of switching power supply Source overcurrent and overload
✦ Off-cycle emitter bias output, which improves the resistance of the power tube. pressure
✦ Current limiting resistor with temperature compensation to accurately limit the flow
✦ Built-in thermal protection circuit
✦ Use the switching power tube to complete the startup, so that the power consumption of the startup resistor more than 10x reduction
✦ Low startup and operating current
✦ VCC overvoltage automatic limit
✦ VCC low voltage protection and low voltage restart function
✦ Wide voltage output power can reach 12W, narrow voltage output power can be up to 18W

APPLICATION
✦ AC/DC adapters, such as mobile phone chargers, external power boxes, etc.
✦ Internal power supply of green and energy-saving home appliances, such as induction cooker, microwave oven