The reference design is based on Power Integrations’ LNK457DG, a member of the innovative LinkSwitch-PL family of LED driver ICs optimized for compact, non-isolated installations.
The output current may be reduced using a standard AC mains TRIAC dimmer down to 1 percent (3 mA) without instability or flickering of the LED array. The supply is compatible with both low-cost, leading-edge dimmers and more sophisticated trailing-edge dimmers. It operates over the universal AC input range (85VAC to 265VAC, 47Hz to 63Hz) and can withstand an input range of 0VAC to 300VAC, improving field reliability and lifetime during line sa
The board fits inside a pear-shaped A19 LED replacement lamp with an E26/27 base. RDK-251 contains full power supply specs, schematic, BOM, transformer documentation, PCB layout, and performance data.
LinkSwitch-PL devices are currently available in SO-8, eSOP as well as eDIP packages, and are priced at $0.86 each for 10,000-piece quantities. RDK-251 is likewise available.
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