Monitor Provides Accurate Short Circuit Current Measurement
Suitable for motor control and power bricks
A wide common-mode input voltage range, from ground to within 2V of the supply voltage, ensures that the ZXCT1050 current monitor from Zetex Semiconductors will provide accurate current measurement even if the load is short circuited.
The ZXCT1050 provides a current output and features a very low offset voltage, increasing its versatility and allowing it to be optimised for low in-line voltage drop. Able to operate on both high and low sides of the load, the monitor will support dynamic output-current limitation circuits in a broad range of applications, from motor control circuits to power supply bricks.
The ZXCT1050 translates the voltage across an external sense resistor into an accurate proportional output current. Since the monitor’s gain is programmable, being accurately set using two external resistors, designers can select the sense resistor value to achieve the best compromise between accuracy and power dissipation.
At 50µA, the current monitor’s quiescent current is 10 times less than that of alternatives, providing an improvement in overall power efficiency. The monitor is offered in the compact SOT23-5 format and will operate over an extended industrial temperature range from –40ºC to +125ºC.
Features
Current monitor with current output
Programmable gain output
Up to 2.5V sense voltage
2.5V to 20V supply range
±3% typical accuracy
50µA quiescent current
1MHz bandwidth
SOT23-5 package
Extended industrial temperature range: -40ºC to +125ºC
Applications
DC motor control
Overcurrent monitor
Battery chargers
Battery gauges
Power management
For further information, including FREE ZXCT1050 Samples and Datasheet, pleaseclick here
Arrow Electronics, Inc is a global provider of products, services and solutions to industrial and commercial users of electronic components and enterprise computing solutions.
