AL1772

NOT RECOMMENDED FOR NEW DESIGN CONTACT US AL1771/1772 PFC CONTROLLER + SINGLE/DUAL DIMMABLE LINEAR LED DRIVER Description Pin Assignments The DIODES™ AL1771/1772 is a high integration chip with an Offline High Power Factor Correction (PFC) controller and a single/dualchannel Linear LED driver in one package. AL1771/1772 implements an optimized 2-stage topology for a wide power range of Connected Lighting applications. It is targeted for 1-Channel Dimmable and 2Channel Tunable White and various Connected Lighting applications. Based on Primary Side Regulation (PSR) implementation, the PFC controller does not require Opto-coupler and any secondary feedback circuit to save overall BOM cost and it operates at Quasi-Resonant (QR) mode where MOSFET is turned on at the valley of the drain voltage, which minimizes switching loss and results in high efficiency. The key merits of the Single/Dual Dimmable Linear LED driver attribute to excellent dimming performance, low standby power, ease of system implementation, and great product scalability. It supports Eflicker free High Frequency PWM dimming with Deep Dimming Capability: Support 40kHz down to 4%, 10kHz down to 1.0%, 4kHz down to 0.4%, or 1kHz down to 0.1% with good dimming linearity. When no PWM signal is detected by AL1771/1772, the LED driver Section will automatically enter the low-power mode for power saving purpose to be in compliance with Energy Star standby power requirement for Connected Lighting. Integrates Adaptive ...