SN03A is a PFC controller specially designed for single stage flyback PWM control in lighting applications. It features an internal start-up timer for stand-alone applications, an analog multiplier with for power factor correction (PFC), zero current detector (ZCD) to ensure TM operation, a current sensing comparator with built-in leading-edge blanking (LEB), and a totem pole output driving external power MOSFET to achieve good reliability and EMI optimization.


Features:

◆ Low Start-up Current and Operating Current
◆ Cycle-by-Cycle Current Limiting
◆ Internal Leading Edge Blanking (LEB)
◆ Analog multiplier for Power Factor Correction
◆ Internal Startup Timer for Stand-alone Applications
◆ Under Voltage Lockout (UVLO) with Hysteresis
◆ VCC over voltage protection (OVP)
◆ Transition Mode (TM) Operation
◆ Totem Pole Output with High State Clamping
◆ Audio Noise Free Operation
◆ Available in DIP8 and SOP8 packages, RoHS compliant



Applications:

◆ Single Stage High PF Flyback AC/DC SMPS
◆ LED Lighting Power

Typical Application: