SG6741A — Highly Integrated Green-Mode PWM Controller April 2008 SG6741A — Highly Integrated Green-Mode PWM Controller Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ High-voltage Startup Low Operating Current: 4mA Linearly Decreasing PWM Frequency to 18kHz Frequency Hopping to Reduce EMI Emissions Peak-current-mode Control Cycle-by-cycle Current Limiting Leading-edge Blanking (LEB) Synchronized Slope Compensation GATE Output Maximum Voltage Clamp: 18V VDD Over-voltage Protection (Auto Restart) VDD Under-voltage Lockout (UVLO) Internal Open-loop Protection Constant Power Limit (Full AC Input Range) Description The highly integrated SG6741A series of PWM controllers provides several features to enhance...

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