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The AL8861 is a hysteresis mode DC-DC step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device can operate from an input supply between 4.5V and 40V and provide an externally adjustable output current up to 1A for TSOT25 package and 1.5A for SOT89-5 package. Depending upon supply voltage and external components, this converter can provide up to 40 watts of output power.
LED Retrofit for Low Voltage Halogen
Low Voltage Industrial Lighting
External Driver with Multiple Channels
Low BOM Counts
Wide Input Voltage Range: 4.5V to 40V
Output Current up to 1.5A
Internal 40V NDMOS Switch
Typical 5% Output Current Accuracy
Single Pin for On/Off and Brightness Control by DC Voltage or