Miniature current monitor delivers versatile performance

Zetex has introduced a current monitor IC in the miniature 5-pin SOT23 package, which provides accurate current measurement under all load conditions including when the load is short-circuited.

The ZXCT1050 achieves this flexibility due to its wide common-mode input voltage range; from ground to within 2V of the supply voltage. This wide sense-input range also allows the ZXCT1050 to operate on the high or low side of the load.

Other features include current-output topology and low offset voltage, creating a versatile device that can be optimised for low in-line voltage drop. The low offset voltage enables a typical accuracy of 1% for sense voltages of only 30mV, delivering improved performance where small sense resistors are used at higher currents.

Programmable voltage gain using two external resistors allows designers to adjust the sense resistor value for optimum accuracy and power dissipation. To further aid lowpower operation, the quiescent current of 50µA is more than ten-times lower than that of alternative devices in larger packages.

 

FEATURES Programmable output-voltage scaling Supply voltage range: 2.7V to 20V Only three external resistors required

APPLICATIONS Power supply bricks DC motor and solenoid control Battery management Power management Short-circuit detection

 

 

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