Maxim Integrated MAX4072AUA+ High-Side Current-Sense Amplifier

The MAX4072AUA+ from Maxim Integrated is a precision, high-side current-sense amplifier that is designed to monitor the current flow in power management systems. This compact and efficient device is housed in a small 8-pin µMAX package, making it an ideal choice for space-constrained applications. The MAX4072AUA+ operates over a wide supply voltage range of 2.7V to 28V, ensuring versatility across various platforms and systems.

One of the key features of the MAX4072AUA+ is its ability to sense the voltage drop across shunt resistors at the high side of a load. This capability allows for accurate current measurement while the load remains safely grounded. The device provides a voltage output that is proportional to the current passing through the shunt resistor, enabling easy interfacing with ADCs or microcontrollers for further signal processing.

The MAX4072AUA+ offers a low input offset voltage of just 250µV (max) and an impressive gain accuracy of ±0.5% (max), ensuring precise current sensing. It also has a wide input common-mode range that extends from 0V to 28V, independent of the supply voltage. This feature is particularly useful in battery-powered applications where the supply voltage may vary over time.

With its integrated precision resistors, the MAX4072AUA+ provides a fixed gain of 20V/V without the need for any external components, simplifying the design and reducing the overall component count. Additionally, the device boasts a quiescent current of only 100µA, making it suitable for power-sensitive applications.

The MAX4072AUA+ is an excellent choice for a variety of applications, including battery management, portable devices, power management, and overcurrent protection circuits. Its robust design includes protection against reverse battery and load dump, ensuring reliable operation in harsh environments.

Overall, the Maxim Integrated MAX4072AUA+ is a high-performance, easy-to-use solution for current monitoring in a wide array of electronic systems, providing engineers with a precise, low-power, and space-efficient component.