Date: 14/05/2010

Step-Down HBLED driver controller IC from Micrel

Micrel Inc has introduced the MIC3203, a new Step-Down High Brightness LED (HBLED) driver controller IC with high-side current sense and PWM dithering feature for EMI control. It is a device that is said to reduce the complexity and cost of LED driver solutions for high current MR-16 lamps, track/pathway lighting and other architectural lighting applications.

"With the ever increasing concern regarding carbon emissions and energy costs, high-efficiency lighting has become one of the highest growth segments of the electronics market," noted Doyle Slack, senior marketing director for analog power, Micrel. "Micrel's LED driver products provide the performance, flexibility and ease-of-use required by LED lighting system designers to meet these challenges."

The MIC3203 is capable of driving multiple HBLEDs in series and is said to provide an efficiency of more than 90% with +/-5 percent current accuracy from input voltages of 4.5V to 42V. Its operating frequency is adjustable up to 1.5MHz. It consists of a PWM dimming pin, an enable pin for low power shutdown, over temperature protection and an under voltage lockout. It also has an external power switch and requires no external compensation.

Package: SOIC-8L

Price: Starting at US$0.82 for 1K units.

Availability: Now

To know more visit: www.micrel.com

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