FSD200B Datasheet

Green Mode Fairchild Power Switch (FPS™)


Each product in the FSD2x0B (x for 0, 1) family consists of an integrated Pulse Width Modulator (PWM) and Sense FET, and is specifically designed for high performance off line Switch Mode Power Supplies (SMPS) with minimal external components. Both devices are integrated high voltage power switching regulators which combine an avalanche rugged Sense FET with a current mode PWM control block. The integrated PWM controller features include: a fixed oscillator with frequency modulation for reduced EMI, Under Voltage Lock Out (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turn-on/turn-off driver, Thermal Shut Down (TSD) protection and temperature compensated precision current sources for loop compensation and fault protection circuitry. When compared to a discrete

• Single Chip 700V Sense FET Power Switch for 7DIP
• Precision Fixed Operating Frequency (134KHz)
• FSD210B Consumes Under 0.1W at 265VAC & No Load with Advanced Burst-Mode Operation
• Internal Start-up Circuit
• Pulse-by-Pulse Current Limiting
• Over Load Protection (OLP)
• Internal Thermal Shutdown Function (TSD)
• Auto-Restart Mode
• Under Voltage Lockout (UVLO) with Hysteresis
• Built-in Soft Start
• Frequency Modultation for EMI Reduction
• FSD200B Does Not Require an Auxiliary Bias Winding

• Charger & Adapter for Mobile Phone, PDA & MP3
• Auxiliary Power for White Goods, PC, C-TV & Monitor



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Manufacturer information


Fairchild has a rich history as a pioneer in the semiconductor industry and that pioneering spirit endures today. In an era where diversity can dilute focus and hamper innovation, we specialize in the development and manufacturing of a complete portfolio of low- to high-power solutions for the mobile, industrial, cloud, automotive, lighting, and computing industries. Fairchild is one of the most reliable partners in the industry, offering the shortest time from concept to silicon, expert FAEs for customer support, and a flexible, multi-source supply chain. Our vision is clear – anticipate the power efficiencies demanded by tomorrow’s electronic products and deliver an amazing design experience

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