Zywyn has introduced the ZD850, a high-power, constant-current LED driver supplying up to 1,5 A and targeted at the industrial lighting market segment.
The device is a constant off-time, high power LED driver IC using a buck converter topology. It operates from a selective input voltage range of 4 V a.c. to 16 V a.c., or 5 V d.c. to 27 V d.c., and provides a regulated programmable constant output current for one to five high power LEDs connected in series per string.
The ZD850 is based on a high efficiency PFM control design with over-voltage circuit protection and over-temperature thermal protection, allowing good LED current regulation over a wide range of supply voltages using conventional transformers or E-transformers.
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