Automotive sequential LED lighting IC cuts size, cost

November 04, 2020 //By Rich Pell
Automotive sequential LED lighting IC cuts size, cost
Chipmaker Maxim Integrated Products has announced a sequential LED controller designed to allow the easy and cost-effective addition of automotive sequential LED lighting features.

The MAX25605 sequential LED lighting IC is designed to save development time and reduce design complexity by eliminating the need for a microcontroller or software. In addition, says the company, the MAX25605 reduces design space by up to 50 percent and slashes bill-of-materials (BOM) costs by up to 25 percent compared to the closest competing solution.

"Integration makes the MAX25605 the most compressive sequential turn signal solution in the market," says Yin Wu, senior business manager, Automotive Business Unit at Maxim Integrated. "In addition, hardware programming simplifies development efforts while managing up to 750 mA of LED current allows for much more flexibility to meet lumen requirements."

Sequential LED lighting features used to be exclusive to high-end vehicle model segments due to complexity in design and cost constraints. The MAX25605 is designed to simplify designs, allowing more mid-range and economy models to adopt their own animation signatures.

The device controls LED current up to 750 mA versus 100 mA for competing solutions, thus providing more flexibility in the lighting design, says the company. The MAX25605 integrates six switches, manages up to three LEDs per switch, and can be daisy-chained up to 16 devices without the need for a microcontroller or software.

With this solution, says the company, designers can accurately program sequence timing, direction and linear or log dimming, while also easily detecting fault conditions. The component reduction cuts BOM costs and saves time and effort by eliminating the need for software.

The MAX25605 is available for $2.19 (1000-up, FOB USA). An evaluation kit - the MAX25605EVIT - is available for $100.

Maxim Integrated


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