LED DRVR Flyback 1-CH 8-Pin SOIC T/R

This highly integrated PWM controller, FL6630, provides several features to enhance the performance of single- stage flyback converters. The proprietary topology, TRUE CURRENT@, enables the simplified circuit design for LED lighting applications. TRIAC dimming is smoothly managed by dimming brightness control without flicker. By using single-stage topology with primary-side regulation, an LED lighting board can be implemented with few external components and minimized cost. It does not require an input bulk capacitor or feedback circuitry. To implement good power factor and low total harmonic distortion constant on-time control is utilized with an external capacitor connected to the COMI pin. Precise constant-current control regulates accurate output current versus changes in input voltage and output voltage. The operating frequency is proportionally changed by the output voltage to guarantee Discontinuous Conduction Mode (DCM) operation with higher efficiency and simpler design. The FL6630 provides protections such as open-LED, sh01t-LED, and over-temperature protections. Current-limit level is automatically reduced to minimize output current and protect external components in a short-LED condition. The FL6630 controller is available in an 8-pin Small Outline Package (SOP).

• Cost-Effective Solution: No Input Bulk Capacitor or Feedback Circuitry
• Power Factor Correction
• Accurate Constant-Current (CC) Control, Independent Online Voltage, Output Voltage, and Magnetizing Inductance Variation
• Linear Frequency Control Improves Efficiency and Simplifies Design
• Open-LED Protection
• Short-LED Protection
• Cycle-by-Cycle Current Limiting
• Over-Temperature Protection with Auto Restart
• Low Start-up Current: 20 µA
• Low Operating Current: 5 mA
• VDD Under-Voltage Lockout (UVLO)
• Gate Output Maximum Voltage Clamped at 18V
• SOP-8 Package
• Application Voltage Range: 80 VAC - 308 VAC