Monitor simplifies current measurement at high voltages
18 April 2007
Power Electronics / Power Management
With an operating range of 3-40 V, the ZXCT1081 current monitor from Zetex Semiconductors provides a very simple high voltage current measurement solution for automotive, industrial and power supply applications. With its fixed gain, the ZXCT1081 requires only a single low value sense resistor to measure high side currents, simplifying circuit design and reducing PCB area and cost. The SOT23-5 packaged monitor is particularly well suited to over-current protection duties in power supply and automotive applications - it has a 60 V transient capability allowing it to tolerate load-dump conditions without the need for additional circuitry. A separate supply pin enables the ZXCT1081 to function under short circuit conditions, providing an end stop voltage at the output. The monitor's 5 V supply voltage operation ensures the monitor can be readily interfaced with microcontrollers and A-D converters and prevents the output from exceeding supply rail voltage.
Arrow Altech Distribution, +27 (0) 21 555 1884
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