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Diodes unveils LED driver with 5V to 36V input voltage range

10 Feb 2015

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Diodes Inc. has introduced the AL8820 LED driver converter, a compact, two-stage, boost/buck non-dimmable MR16 lamp design solution that features high power factor, low total harmonic distortion (THD) and low-output current ripple. Combining two DC-DC regulators in the 5mm x 6mm SO-8EP package, the device operates in continuous-current mode and uses an innovative control scheme to ensure high compatibility with most commonly used electronic transformers.

For example, in a 6W MR16 application, the device operates flicker-free with most common LED lighting transformers at a power factor of 0.9 and THD of 30 per cent.

AL8820

An ultra low RDS(ON) internal 40V/2A NDMOS switch helps minimise power loss while supporting the delivery of large output powers in a wide range of 5W to 7W MR16 LED lamps, added Diodes.

The AL8820 flaunts a wide 5V to 36V input voltage range and an output current of up to 2A can be achieved. A switching frequency of up to 1MHz means that smaller-sized external inductors and capacitors can also be used with the device for MR16 solutions, helping to further minimise overall circuit footprint and BOM cost.

The AL8820's comprehensive integrated protection features include: under-voltage lock out, output short circuit, output open-circuit, overcurrent, overvoltage and overtemperature protection.




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