SFL678

Softwin swAides SFL678 AC/DC PSR Controller for Dimmable LED Driver FEATURES ◆ Support Analog/PWM/TRIAC Dimming ◆ Proprietary “Extended Synchronous Dimming” to Achieve Larger than 1000:1 Dimming Range ◆ Primary Side Regulation (PSR) Control, No Secondary Feedback Circuit Required ◆ 1% Precision (@Tj=25 ℃) Internal Reference Voltage for Constant Current (CC) Control ◆ Wide VDD Range (10 to 30V) Eases Flexible LED System Design ◆ Precision LED Output Voltage Clamp ◆ Compensate for Line Voltage Variation and Transformer Inductance Tolerance ◆ Built-in Soft Start ◆ All Pins Floating Protection ◆ LED Open/Short Circuit Protection ◆ PFM Control Eases EMI Design ◆ Cycle-by-Cycle Current Limiting ◆ Built-in Leading Edge Blanking (LEB) ◆ VDD Under Voltage Lockout (UVLO) ◆ VDD OVP & Clamp APPLICATIONS ◆ Dimmable LED Luminaries GENERAL DESCRIPTION SFL678 is a high performance AC/DC offline PSR (Primary Side Regulation) controller fo...