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ON Semiconductor Introduces Low Power LED Driver Optimized for Coin Cell Powered Backlighting Applications  Chinese Japanese Korean

Ultra-small CAT3661 provides up to 92 percent efficiency to extend battery life in a wide range of ultra low power, portable handheld LED applications

LED Driver image

PHOENIX, Ariz. – Sept. 16, 2010 – ON Semiconductor (Nasdaq: ONNN) a premier supplier of high performance, energy efficient silicon solutions for green electronics today introduced the CAT3661 - a new one-channel LED Driver for ultra low power LED applications such as portable handheld medical equipment.

“High efficiency and small size are often top of the agenda for designers of handheld electronics equipment,” said Anthony Russell, director of LED Power Products, ON Semiconductor. “The CAT3661 low power Quad-Mode LED driver utilizes patented technology to fully address these needs and supports customers in launching new battery powered product designs that meet the needs of end users by combining small form factor and long battery life.”

The CAT3661, which uses a patented architecture and integrates fault protection and fault diagnostics, is able to drive a single LED backlight with a current of up to 5 mA. Soft-start current limiting and short-circuit protection make the new device ideal for use in equipment powered by coin cell batteries. Typical applications include low power backlighting for LCDs and backlighting for a wide range of portable handheld devices including medical equipment.

Packaged in a 16-lead TQFN package measuring just 3 mm x 3 mm x 0.8 mm high, the CAT3661 provides a valuable solution for engineers working on new designs where available board space is limited. Space as well as overall system cost savings are further enhanced due to the fact that the low noise input ripple and constant switching frequency of the new device allow the use of small external ceramic capacitors. The quad-mode charge pump supports a wide range of input voltages from 2.0 V to 5.5 V and also helps the CAT3661 achieve peak efficiency levels of up to 92 percent - up to 10 percent higher than traditional high efficiency 1.5x tri-mode charge pumps. A typical quiescent current of just 150 µA across all operating modes at full load and a zero current shutdown help reduce power consumption and ensure that application battery life is maximized.

Packaging and Pricing
The CAT3661 is offered in a 16-lead Pb-free TQFN package. Pricing for these devices is $0.86 per unit in 10,000 unit quantities.

Upcoming Events
ON Semiconductor will be exhibiting its energy efficient lighting solutions at the Strategies in Light Europe conference Sept. 27-29 in Frankfurt, Germany.

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关于安森美半导体
安森美半导体(ON Semiconductor,美国纳斯达克上市代号:ONNN)致力于推动高能效电子的创新,使客户能够减少全球的能源使用。公司全面的高能效电源和信号管理、逻辑、分立及定制方案阵容,帮助工程师解决他们在汽车、通信、计算机、消费电子、工业、LED照明、医疗、军事/航空及电源应用的独特设计挑战。公司运营敏锐、可靠、世界一流的供应链及品质项目,及在北美、欧洲和亚太地区之关键市场运营包括制造厂、销售办事处及设计中心在内的业务网络。更多信息请访问http://www.onsemi.cn

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