MXIM Introduces Offline LED Driver MAX16841

MaximIntegrated Products, Inc (NASDAQ: MXIM) introduces the MAX16841, an off-line LED driver that uses leading edge (triac) and trailing edge (transistor) dimmers for flicker-free dimming from maximum light intensity to zero light intensity. Fixed frequency control optimizes the efficiency of operating low voltage and high voltage AC grids.

With a 90VAC to 265VAC input range, the MAX16841 is a versatile solution for dimmers in Japan, China, the US and Europe. The drive allows direct replacement of incandescent and halogen lamps, thus avoiding compatibility issues when pre-installing the dimmer. The MAX16841 does not require an electrolytic capacitor to operate, extending the life of the LED. Eliminating these capacitors also saves space and money. The LED driver is ideal for upgrading dimmable LED lights and general purpose LED lights in industrial, commercial and residential lighting applications.

The MAX16841 uses patented technology to control the input current of the illuminator. The driver actively corrects the input current to ensure flicker-free operation over most electronic transformers and dimmers. LED lamp designers are able to design replacements for halogen and incandescent lamps that directly replace dimmable to zero light.

Designed for both isolated (flyback) and non-isolated (buck) configurations, the MAX16841 is suitable for both high-voltage AC networks (220VAC to 230VAC) and low-voltage AC networks (100VAC to 120VAC). The fixed frequency control architecture selects the optimum conduction mode (DCM or CCM) based on the input voltage to improve efficiency.

The MAX16841 can be designed without the use of electrolytic capacitors. Electrolytic capacitors are usually the most prone to failure of the driver circuit, thus extending the life of the LED lamp. If electrolytic capacitors are used in existing designs, the MAX16841 can even maintain normal illumination in the event of a fault in these capacitors.

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