Current monitor enables true short circuit current monitoring

Powered via a dedicated supply pin, the device can operate on both high and low sides of the load and is ideally suited to power bricks.

The current monitor translates the voltage across a low cost external sense resistor into an accurate proportional output voltage. The ZXCT1051’s very low offset voltage means it provides a measurement accuracy better than 3% at 25ºC and a sense voltage of 30mV.

By offering a fixed gain of 10, the ZXCT1051 removes the need for an additional external resistor, and packaged in the miniature SOT23-5 outline, it presents designers with a highly compact and cost effective current monitoring solution.

Drawing a quiescent current of less than 50µA, the ZXCT1051 offers a much greater power efficiency than alternatives, and with an operating temperature range of -40 to 125ºC it readily supports industrial and automotive environments. The monitor’s wide, 2.7 to 20V supply range makes it suitable for a broad range of applications.