Exar Releases 8-Channel Compact Power Optimizing LED Driver

Channels may also be combined to achieve customised higher currents per channel while Smart Talk technology reduces overall system power consumption and heat dissipation.

LEDs are becoming increasingly more prevalent in all aspects of lighting, where they provide a simple, efficient and highly customisable solution, said Eric Pittana, Director of Marketing, Power Product Line. The XRP7618 provides the same versatility and performance at the driver level for all lighting applications requiring multiple strings of several LEDs.

With a capability of 100mA per channel and outputs rated at 30V, the XRP7618 can control strings of multiple LEDs with better than ±1.5% channel to channel current matching. Multiple channels can be combined to increase current driving capability per channel, up to 800mA, and multiple XRP7618s can be placed in parallel for applications requiring more than eight strings of LEDs. Current is programmed via an external resistor while analog or PWM dimming control is supported up to 25kHz. Featuring Smart Talk technology, the XRP7618 maximises the overall system efficiency by dynamically reporting the minimum LED voltage necessary to maintain current regulation mode. The under voltage lock out, open LED, and over temperature protection functions insure safe operation under abnormal operating conditions.

Highly reliable, accurate, power management is a critical part of any technology system. Exar has a broad array of high-performance and industry-proven power management solutions including handset and lighting controls, power conversion, and standard linear devices.

The XRP7618 is available now in volume quantities and offered in a RoHS compliant, green halogen free exposed pad 20-pin TSSOP package. Pricing starts at $0.69 for 1,000 unit quantities.