Maxim Integrated's MAX25610A/B LED drivers address various concerns by combining solution size, high efficiency, and EMI performance into a single package. These ICs meet a wide range of voltage requirements and can decrease design complexity, lower bill-of-material (BOM) costs, and improve power efficiency. They offer a wide input voltage range from 5 V to 36 V in buck-boost LED driver applications with up to 90% efficiency in buck-boost mode. These LED drivers have an internal current sense option and integrated high- and low-side switching MOSFETs to reduce solution space and cost. They offer programmable on-chip PWM dimming which allows for fine dimming control without having to use a separate microcontroller. Additionally, the MAX25610B features a 2.2 MHz switching frequency option allowing for an even more compact solution.

Maxim also offers the MAX25600, a 60 V, synchronous, high-voltage, four-switch buck-boost LED controller that shifts seamlessly 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.

Features

• High efficiency: delivers up to 90% efficiency when compared to a standard buck-boost LED driver, which provides about 85% efficiency
• Industry-leading EMI performance: enables designers to pass CISPR 25 EMI specification
• Small size: integrates two MOSFETs (high- and low-side switching) and is available in a 5 mm x 5 mm TQFN
• Flexibility: enables configuration of buck, buck-boost, and boost modes to support a wide variety of LEDs and topologies in high-performance exterior and front lighting

Applications

• Automotive lighting
• Industrial lighting
• General and commercial lighting