Diodes Inc. AL1677-20BS-13 LED Driver Converters are universal AC-input (85~277 VAC), high-efficiency and high-accuracy cost-effective solutions for general illumination LED lamps. They feature a topology that provides accurate constant current (CC) line and load regulation, operating at boundary conduction mode (BCM) to assist EMI/EMC qualification and testing to meet the latest regulatory laws.The AL1677-20BS-13 system replaces the auxiliary winding and external high voltage MOSFET with few external components to create a low bill of material (BOM) cost solution. The AL1677-20BS-13 has comprehensive protection features to enhance system safety and reliability. With thermal foldback function, the AL1677-20BS-13 can reduce output current when the driver's temperature is higher than the setting value.
Feature
- >90% Efficiency
- Valley Detection to Minimize Switching Loss
- Universal Rectified 85 to 277 VAC Input Range
- Internal MOSFET up to 500V
- Tight Current Sense Tolerance: ±3%
- Low Startup Current: 170µA
- Low Operation Current: 100µA
- Standard Inductor (No auxiliary winding)
- Internal Protections:
- Undervoltage Lockout (UVLO)
- Leading-Edge Blanking (LEB)
- Output Open Protection
- Output Short Protection
- Open-Load and Reload Detection
- Thermal Fold-Back Function
- Overtemperature Protection
- SO-8 Package
Applications
- Retrofit LED Lamps
- High Voltage DC-DC LED Driver
- General Purpose Constant Current Source
