AL8866
Description
The AL8866 is a Buck-Boost, Boost, Buck, and SEPIC (single-ended primary-inductance converter) DC-switching controller designed to drive an external MOSFET for high-power LED applications.
Key Features
- Wide Input Voltage Range from 4.7V to 85V
- Pre-Fixed 400kHz Switching Frequency (Factory Set)
- Spread Spectrum Frequency Modulation for Low EMI
- Analog Dimming Range: 1% to 100% 100% Dimming Level ±3% Current Accuracy 20% Dimming Level ±12% Current Accuracy
- PWM Dimming Ratio 100:1 at 200Hz PWM Frequency
- Programmable Soft Start
- Fault Status Indicator for Protections
- Output Overvoltage and LED Open Circuit Protection
- Output Undervoltage and LED Short Circuit Protection
- Cycle-by-Cycle Overcurrent Limitation Protection
Applications
- Industrial LED lighting
