MC33368 High Voltage GreenLine Power Factor Controller The MC33368 is an active power factor controller that functions as a boost preconverter in offline power supply applications. MC33368 is optimized for low power, high density power supplies requiring a MC33368 Line Restart Delay Restart Delay V CC Output Overvoltage UVLO Internal Bias V ref Generator FB Multiplier/ S PWM Error Comp AGND S Amplifier Mult R LEB Current Q Gate Sense Current Sense PGND WatchdogTimer/ Frequency Frequency ZC Det Zero Current Detector Clamp Clamp This device contains 240 active transistors. Figure 1. Representative Block Diagram MAXIMUM RATINGS (T = 25C, unless otherwise noted) A Rating Symbol Value Unit Power Supply Voltage (Transient) V 20 V CC Power Supply Voltage (Operating) V 16 V CC Line Voltage V 500 V Line Current Sense, Multiplier, Compensation, Voltage Feedback, Restart Delay and Zero V 1.0 to +10 V in1 Current Input Voltage LEB Input, Frequency Clamp Input V 1.0 to +20 V in2 Zero Current Detect Input I 5.0 mA in Restart Diode Current I 5.0 mA in Power Dissipation and Thermal Characteristics D Suffix, Plastic Package Case 751K Maximum Power Dissipation T = 70C P 450 mW A D Thermal Resistance, JunctiontoAir R 178 C/W JA Operating Junction Temperature T 150 C J Operating Ambient Temperature T 25 to +125 C A Storage Temperature Range T 55 to +150 C stg Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. NOTE: ESD data available upon request.