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ON Semiconductor Introduces Current Mirror with Switch Controller and SENSEFET® Power MOSFETs  Chinese Japanese Korean

System level power management solution supports integrated, low power current monitoring for portable computers and networking equipment

CAT2300 current mirror with switch controller, and power MOSFETs

PHOENIX, Ariz. – Aug. 18, 2011 – ON Semiconductor (Nasdaq: ONNN), a premier supplier of high performance silicon solutions for energy efficient electronics, has introduced the CAT2300 current mirror with switch controller, that when combined with the company’s NTMFS4833NS or NTMFS4854NS SENSEFET Power MOSFET devices, provides a compact, efficient solution for current monitoring.

This combination of new devices enables system level power management in applications such as portable computers and networking equipment.

Exact control and matching of the SENSEFET’s SENSE output with the KELVIN voltage leads by the CAT2300 ensures accurate current monitoring over the SENSEFET’s entire operating range.

The CAT2300 offers a single chip alternative to a discrete circuit approach and is able to provide sensorless precision current measurement of 0.9 volt (V) to 5 V power supply rails. The new device performs current mirroring to 70 milliamperes (mA) – which equates to 25 amperes (A) of measured current - and integrates logic level ON /OFF control of the power MOSFET and its own circuitry, reducing power consumption to virtually zero. A soft-start function is also included. Current consumption is less than one microampere (µA) in shutdown mode supporting long life in battery powered applications. Housed in a space saving, low profile 2 mm x 3 mm TDFN-8 package, the CAT2300 is suitable for use over the full -40 ºC to +85 ºC operating temperature range.

The NTMFS4833NS and NTMFS4854NS are 30 V, N-Channel SENSEFET MOSFETs that provide lossless current sensing with improved accuracy. They also combine low on-resistance, low capacitance, and low gate charge to minimize conduction, driver, and switching losses. The NTMFS4833NS and NTMFS4854NS are rated at 26 A and 24 A respectively.

“Replacing multiple component discrete solutions with integrated devices can bring benefits such as PCB real estate savings, lower power consumption and enhanced reliability,” said Paul Leonard, vice president of Power MOSFETs at ON Semiconductor. “The CAT2300, which has been optimized for use with our SENSEFET devices, supports a simple, compact, and highly efficient solution for accurate current monitoring in a wide range of fixed and portable equipment applications.”

Packaging and Pricing
The CAT2300 is offered in a Pb-free, RoHS-compliant TDFN-8 package, and is priced at $0.56 per unit in 3,000 unit quantities. The NTMFS4833NS and NTMFS4854NS are offered in a Pb-free, RoHS-compliant SO-8 Flat Lead package, and are priced between $0.87 - $1.60 per unit in 1,500 unit quantities.

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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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