TOP250YN Off-Line Switching Power Converter IC TO-220-7C

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TOP250YN Off-Line Switching Power Converter IC TO-220-7C TOP250YN Off-Line Switching Power Converter IC TO-220-7C is a high-performance integrated offline switching power converter from the TOPSwitch-GX family. It combines a high-voltage power MOSFET, PWM controller, protection circuitry, and startup functions into a single device, significantly reducing external component count and simplifying SMPS design. The device features programmable current limiting, line sensing, selectable switching frequency, soft-start, thermal shutdown, and frequency jittering for reduced EMI. It is ideal for designing reliable and energy-efficient AC-DC power supplies for industrial, consumer, and embedded electronic applications. Features Integrated 700V high-voltage power MOSFET and PWM controller. Built-in Eco Smart technology for low standby power consumption. Programmable current limit for flexible power supply design. Selectable switching frequency for optimized performance. Frequency jittering minimizes EMI emissions. Integrated soft-start reduces startup stress. Line under-voltage and over-voltage protection. Automatic thermal shutdown with hysteresis. Requires very few external components. TO-220-7C package suitable for high-power through-hole applications. Specifications Parameter Details Product Type Off-Line Switching Power Converter IC Product Family TOP Switch-GX Part Number TOP250YN Package Type Plastic TO-220-7C Lead Finish Pure Matte Tin(Pb-Free) Mounting Type Through Hole Breakdown Voltage 700V(Min) DRAIN Voltage -0.3Vto700V DRAIN Peak Current 10.08A CONTROL Pin Voltage 5.85V Supply Current 2.4mA Switching Frequency 132kHz(Typical) Low-Frequency Option 66kHz Maximum Duty Cycle 78% Current Limit 2.40A(Internal,25°C) ON-State Resistance (25°C) 2.90Ω ON-State Resistance (100°C) 4.80Ω Auto-Restart Upper Threshold 5.8V Auto-Restart Lower Threshold 4.8V Soft-Start Time 10ms PWM Gain -23%/mA Thermal Shutdown Temperature 140°C Thermal Shutdown Hysteresis 75°C Thermal Impedance (Y Package) 80°C/W Output Power (230VAC Adapter) 45W Output Power (230VAC Open Frame) 135W Output Power (85VAC–265VAC Adapter) 32W Output Power (85VAC–265VAC Open Frame) 90W Operating Junction Temperature -40°Cto+150°C Storage Temperature -65°Cto+150°C Dimensions Pinout Pin Number Pin Name Function / Description 1 C (Control) Feedback and control input. Connects to the control bypass capacitor and regulates the output. 2 L (Line Sense) Line-sense input for line voltage monitoring and protection functions. 3 X (External Current Limit) External current-limit programming pin used to adjust the MOSFET current limit. 4 S (Source) Source terminal of the internal power MOSFET and primary-side ground reference. 5 F (Frequency) Frequency control pin used to select or synchronize the switching frequency. 6 NC No internal connection. 7 D (Drain) Drain terminal of the internal high-voltage power MOSFET. Connected to the primary side of the transformer. Applications AC-DC switch-mode power supplies. Industrial power supplies. Power adapters. Battery chargers. Consumer electronic equipment. Home appliance power modules. LED driver power supplies. Networking and telecommunications equipment. Embedded auxiliary power supplies. Industrial automation systems. Package Contents 1 x TOP250YN Off-Line Switching Power Converter IC TO-220-7C Datasheet TOP250YN