The NCP1608 is an active power factor correction (PFC) controller specifically designed for use as a pre-converter in ac-dc adapters, electronic ballasts, and other medium power off-line converters (typically up to 350 W). It uses Critical Conduction Mode (CrM) to ensure near unity power factor across a wide range of input voltages and output power. The NCP1608 minimizes the number of external components by integrating safety features, making it an excellent choice for designing robust PFC stages.

• No Input Voltage Sensing Requirement
• High Precision Voltage Reference (±1.6% Over the Temperature Range)
• Wide Control Range for High Power Application (>150 W) Noise Immunity
• Integrated Undervoltage and Overvoltage Protection
• Pin-to-Pin Compatible with Industry Standards
• Accurate and Programmable On Time Limitation
• Transconductance Error Amplifier
• Very Low Startup Current Consumption (
• Low Typical Operating Current Consumption (2.1 mA)
• Source 500 mA / Sink 800 mA Totem Pole Gate Driver
• Undervoltage Lockout with Hysteresis
• Overcurrent Protection
• This is a Pb-Free and Halide-Free Device