LED drivers deliver 90% efficiency, passes CISPR 25 EMI specs
The synchronous buck, buck-boost LED drivers/DC-DC converters offer a complete solution that features industry-leading EMI performance, without compromising on efficiency and size. The 5x5mm ICs drive up to eight HBLEDs directly from the automotive battery and integrate many external components to save on bill of materials (BOM) costs and space. The chips offer a wide input voltage range from 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 sense option and integrated high- and low-side switching MOSFETs to reduce solution space and cost. They support programmable on-chip PWM dimming, which allows for fine dimming control without having to use a separate microcontroller. Additionally, the MAX25610B features a 2.2MHz switching frequency option allowing for an even more compact solution.
Maxim Integrated – www.maximintegrated.com