Maxim Integrated MAX4373TEUA+ High-Side Current-Sense Amplifier

The Maxim Integrated MAX4373TEUA+ is a compact, high-accuracy, high-side current-sense amplifier designed for a wide array of applications requiring precise current monitoring. This device is part of Maxim's precision amplifier family, offering a simple and effective solution for detecting the current flow in power management systems.

The MAX4373TEUA+ operates over a wide supply voltage range from 2.7V to 28V, making it suitable for both low and high voltage systems. It features a low input offset voltage, high gain accuracy, and a quiescent current of only 100µA, optimizing power efficiency in battery-operated devices. The device is housed in a space-saving 8-pin µMAX package, which is ideal for space-constrained applications.

One of the key benefits of the MAX4373TEUA+ is the ability to monitor the load current without disrupting the ground plane. This high-side monitoring allows the detection of current in systems where the load is grounded, which is common in many industrial and consumer applications. The amplifier outputs an analog voltage proportional to the current passing through the sense resistor, which can be easily interfaced with analog-to-digital converters (ADCs) for further processing.

Furthermore, the MAX4373TEUA+ features a wide input common-mode range from 0V to 28V, independent of the supply voltage. This feature ensures reliable operation even in systems with common-mode transients or varying ground potentials. The device also incorporates a current output that can drive a sampling resistor for isolated current sensing applications.

Designed with protection in mind, the MAX4373TEUA+ includes integrated fault protection against overvoltage conditions up to +36V. This makes it an excellent choice for automotive and industrial environments where voltage spikes and transients are common.

Whether it's for battery management, power supply control, or motor monitoring, the MAX4373TEUA+ from Maxim Integrated offers a robust and precise solution for high-side current sensing needs. Its combination of accuracy, low power consumption, and small footprint makes it a versatile component for designers looking to enhance the safety and efficiency of their electronic systems.