AP1681 Datasheet PDF - BCD Semiconductor

General Description
   The AP1681 is a powerful high performance AC/DC power supply controller for dimmable LED lighting applications. The device uses Pulse Frequency Modulation (PFM) technology to regulate output current according to the wall dimmer conduct angle. The AP1681 achieves wide dimming range without visible flicker and is compatible with diverse dimmers.

FEATUREs
• Primary Side Control for Output Current
   Regulation Without Opto-coupler and Secondary
   CV/CC Control Circuitry
• Adjustable Full Brightness and Full Dimming
   Setting
• Wide Dimming Range From 100% to 1%, Down
   to Full Darkness
• Adjustable Dimming Curve for Human Eye
   Sensitivity
• No Visible Flicker
• Connectivity with Analog / Digital / Hybrid
   Dimming Mode
• Built-in Acceleration Start
• Adjustable Soft-start Timing
• CV Open-load Regulation and Reload Detection
• Over Voltage and Short Circuit Protection
• Over Temperature Protection
• Over Current Protection
• Maximum Switch On-time Protection

APPLICATIONs
• Dimmable LED Driver Suit for Leading-edge
   Dimmer, Trailing-edge Dimmer, R Type, R-C
   Type or R-L Type Dimmer