AL1677 Description
The AL1677 is a universal AC-input (85~277 VAC), high-efficiency and high-accuracy Buck LED-driver converter. The AL1677 topology provides accurate constant current (CC) line and load regulation, operating at boundary conduction mode (BCM) to ease in EMI/EMC qualification and testing to meet the latest regulatory laws. The AL1677 system removes the auxiliary winding and external highvoltage MOSFET with few external...
AL1677 Key Features
- > 90% Efficiency
- Valley Detection to Minimize Switching Loss
- Universal 85 to 277 VAC Input Range
- Internal MOSFET up to 500V
- Tight Current Sense Tolerance : ± 3%
- Low Startup Current: 170µA
- Low Operation Current: 100µA (Static)
- Standard Inductor (no auxiliary winding)
- Internal Protections
- Undervoltage Lockout (UVLO)