Inductor free WLED driver can drive a single LED up to 800mA

Micrel Inc. has unveiled a pair of new linear WLED Drivers to further expand its lighting portfolio of products. The MIC4801/MIC4802 are single channel, constant-current sink LED drivers designed for architectural, landscape, and general LED lighting products. The MIC4801/MIC4802 are currently available in volume quantities with pricing starting at $0.58 and $0.62 respectively for 1Ku quantities.

"The MIC4801 /MIC4802 LED drivers are simple to use and do not require an inductor, eliminating noise, minimizing component count and simplifying numerous designs," noted Doyle Slack, senior marketing director for Analog. "With its Ultra Fast PWM Control interface, both the MIC4801and the MIC4802 can achieve brightness control down to 1 percent duty cycle."

The MIC4801 and the MIC4802 are designed to drive a single LED up to 600mA and 800mA respectively. The MIC4801 and the MIC4802 feature low dropout voltages that allow the LEDs to be driven directly from low voltage sources and thus eliminate switching noise/losses, which accompany the use of boost circuitry.

The ±1 percent accurate current regulated WLED ensures uniform display illumination under all conditions. The brightness is controlled through an Ultra Fast PWM Control interface operating down to less than 1 percent duty cycle. The MIC4801 and the MIC4802 are available in an 8-pin SOIC package and 8-Pin ePad SOIC package respectively with a junction temperature range of -40°C to +125°C.
For more information visit: http://www.micrel.com