Diodes' AL8806 Driver Suits LED Lamp Design

Diodes Incorporated has introduced the AL8806 buck LED driver, which is capable of producing a constant current of up to 1.5A from voltage sources of between 6V and 30V. The driver is said to suit MR16, 12V and 24V LED lamp design and ensures a five per cent average LED current accuracy for up to nine high-power LEDs over the wide operating voltage range, helping to improve inter-lamp luminance matching.
The high current handling of the AL8806 means it will also meet the needs of the latest multi die package LEDs, where current levels above 1A are required.

The simple and cost-effective driver is packaged in the small-footprint, low thermal impedance MSOP-8EP, supporting higher LED current drive at higher ambient operating temperatures. Device efficiency is up to 98 per cent. Maximum output current is simply set via a resistor and switching at a frequency of up to 1MHz. The driver helps reduce the size of supporting external components, enabling PCB size to be minimised. Lamp dimming is achieved by applying either a DC voltage or PWM signal that provides a wide range of brightness control that does not overdrive the LED current.

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