Linear LED driver

31 October 2012 Opto-Electronics

Delivering a constant current of up to 150 mA, the AL5812 60 V linear LED driver from Diodes Incorporated provides designers of low-current illumination and signage applications with a simplified circuit solution for accurately controlling ½ W LEDs.

Housed in small-footprint, thermally enhanced SM package options, the driver is able to meet power handling requirements over a wide supply voltage and ambient temperature range.

LED current is set using a high-value resistor on the driver’s 0,5 V RSET pin; a standard low-value decoupling capacitor is the only other external component needed. The driver maintains LED current accuracy to a tolerance of 3%.

Offered in the exposed pad MSOP-8EP and U-DFN3030-6 packages, the AL5812 drives up to 16 low-power LEDs, with its open-drain output handling a swing from 1 V to 60 V. Its industrial temperature range of -40°C to +125°C accommodates high luminaire operating temperatures.

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