Synchronous and boost-speed LED drivers/DC/DC converters offer a complete solution featuring industry-leading EMI performance without compromising efficiency or size. These ICs drive up to eight HBLEDs directly from the vehicle's battery and integrate many external components to save on bill of materials (BOM) costs and space, making them excellent solutions for automotive lighting systems as well as industrial and commercial lighting applications.
As the automotive industry accelerates its transition to all-LED lighting, designers face new challenges in improving efficiency, simplifying designs, and reducing system costs while meeting stringent EMI requirements. Traditionally, designers had to employ multiple components in their systems to meet EMI specifications. To achieve performance improvements, they often had to compromise on system space and efficiency while addressing thermal issues and high costs.
The MAX25610A/B LED drivers address all these concerns by combining solution size, high efficiency, and EMI performance in a single package. These integrated circuits meet a wide range of voltage requirements and can decrease design complexity, reduce bill of materials (BOM) costs, and improve energy efficiency. They offer a wide input voltage range of 5V to 36V in buck-boost LED driver applications with up to 90 percent efficiency in buck-boost mode. These LED drivers have an internal current-sensing option and integrated high- and low-side switching MOSFETs to reduce solution space and cost. They offer programmable on-chip PWM dimming, enabling fine dimming control without the need for a separate microcontroller. Furthermore, the MAX25610B features a 2.2MHz switching frequency option, allowing for an even more compact solution.
Key advantages of the MAX25610A/B
: High efficiency: Offers up to 90 percent efficiency compared to a standard speed-boost LED driver, which provides around 85 percent efficiency.
EMI performance: Enables designers to meet the CISPR 25 EMI specification.
Small size: Integrates two MOSFETs (high-side and low-side switching) and is available in a 5 mm x 5 mm TQFN package.
Flexibility: Allows configuration of buck, buck-boost, and boost modes to support a wide variety of LEDs and topologies in high-performance front and outdoor lighting.
Maxim now also offers the MAX25600, a 60V, synchronous, high-voltage, four-switch LED driver that seamlessly switches between buck, buck-boost, and boost modes. This IC is ideal for driving changing LED loads in high-power automotive, commercial, and industrial lighting applications.
