SC3654 Datasheet | Safety-Chip

Continuous Conduction Mode (CCM), Boost Power Factor Correction (PFC) Controller Description Features SC3654 is a controller for Continuous Conduction Mode (CCM) Power Factor Correction step- up pre- converters. It controls the power switch conduction time (PWM) in a fixed frequency mode and in dependence on the instantaneous coil current. SC3654 minimizes the number of external ponents and drastically simplifies the PFC implementation. It also integrates high safety protection Features that make the SC3654 a driver for robust and pact PFC stages like an effective input power runaway clamping circuitry. SC3654 permanently monitors the output voltage, the coil current and the die temperature to protect the system from possible over- stresses. SC3654 offers prehensive protection coverage UVLO ， Soft Start ， Over- Power Limitation，Overvoltage protection, coil current limitation, Brown- Out Detection ， Over- Power Limitation， thermal shutdown. SC3654 is offered in SOP-8 package. - Average Current Continuous Conduction Mode - Fast Transient Response - Very Few External ponents - Low Startup Current and Shutdown Current - ±1.5 A Totem Pole Gate Drive - Low Operating Consumption - Accurate Fully Integrated 65k Hz Oscillator - Soft- Start for Smoothly Startup Operation - Undervoltage Detection for Open Loop Detection or Shutdown - Overvoltage Protection - Brown- Out Detection - Over Temperature Protection (OTP) - Accurate Overcurrent Limitation Applications - AC Adapters - Flat TVs, PC Desktops - White Goods, other Off- line SMPS Typical Application Input © Safety-Chip Micro SC3654_Datasheet_V1.0_EN GND DRV Ou...