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Power Efficient Monitor Accurately Measures Short Circuit Current

Thu, 07/19/2007 - 8:02am

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Zetex-ZXCT1050_web.jpgThe ZXCT1050 current monitor from Zetex Semiconductors ensures accurate current measurement, even if the load is short-circuited, while improving overall power efficiency. Able to operate on both high and low sides of the load, the monitor supports dynamic output current limitation circuits in a broad range of applications, from power supply bricks to motor control circuits. Efficient, at 50 µA the quiescent current is 10 times less than that of larger packaged alternatives.  Its current output topology and very low offset voltage increase application versatility, and allow the monitor to be optimised for low, in-line voltage drop. The device offers a wide common-mode input voltage range, from ground to within 2V of the supply voltage. Voltage is translated across an external sense resistor into an accurate, proportional output current.  The monitor’s voltage gain is programmable, accurately set using two external resistors. The monitor is in the compact SOT23-5 format and will operate over an extended industrial temperature range of –40°C to 125°C. The ZXCT1050 current monitor unit price is $0.63 at 1,000 quantity. Delivery is 4 to 6 weeks in production volumes.
Zetex Semiconductors
631-360-2222, www.zetex.com

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