LED Lighting Driver ICs

Jun 29, 2011 1:55 PM

CamSemi announced the launch of the C3120 family of LED driver ICs and its intention to become a major player in one of the fastest-growing sectors of the lighting market. The new family has been specifically designed to drive an advanced boost/flyback topology to deliver the three essential performance requirements for volume LED applications: 'best in class' current regulation, high efficiency and power factor correction.

The three new driver ICs target 4, 8 and 12 W designs making them ideal for a wide range of emerging solid-state lighting products: from replacements for halogen spotlights used in retail displays and incandescent lamps for domestic/residential use to fluorescent tubes for commercial and industrial applications.

The C3120 family has been designed to help LED lighting manufacturers fully exploit the cost advantages of bipolar transistors when developing high efficiency, simpler and more cost-effective solutions. The boost/flyback topology coupled with quasi-resonant switching and innovative power-saving techniques help to deliver efficiencies greater than 80% and offer power factors greater than 0.9 to easily meet emerging regulatory requirements. The new devices also make use of CamSemi's novel primary side sensing (PSS) technology - already widely used in today's top specification mobile phone chargers - to eliminate optocouplers and other components. This approach saves BOM costs while also providing an isolated solution for new mains-powered lighting products.

The C3120 family also helps maximize end product safety with advanced features such as protection against over-temperature and output overvoltage to guard against a LED failure. Output short-circuit protection has also been incorporated to further simplify designs and reduce system costs.

C3121, C3122 and C3123 are rated at 4, 8 and 12 W respectively, packaged in SOT23-6 and samples are available now.

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