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. The AL8866 operates within a wide input power supply range from 4.7V to 85V. Based on a fixed-frequency, peak current-mode control architecture, the device incorporates spread spectrum frequency modulation and achieves low EMI...
AL8866 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
AL8866 Applications
- Wide Input Voltage Range from 4.7V to 85V