Maxim Integrated MAX4372HESA High-Side Current-Sense Amplifier

The MAX4372HESA from Maxim Integrated is a sophisticated high-side current-sense amplifier designed with precision and ease of use in mind. This compact, high-accuracy device is ideal for a wide range of applications, including power management, battery charging, and overcurrent detection circuits.

Encased in an 8-pin SOIC package, the MAX4372HESA features a unique input common-mode voltage range that extends from 0V to 28V, making it suitable for both low and high voltage systems. It is specifically engineered to provide a precise, low-cost method for measuring current via a small-sense resistor without disrupting the ground path of the load.

The amplifier's high-side current sensing capability allows for the monitoring of the load current without interfering with the ground path, which is particularly beneficial in systems where maintaining a stable ground reference is crucial. Furthermore, the MAX4372HESA provides a high level of integration by incorporating a precision operational amplifier with a built-in reference to deliver a voltage output proportional to the current passing through the sense resistor.

Key features of the MAX4372HESA include:

• Wide input common-mode voltage range: 0V to 28V
• Low input offset voltage: 250µV (max)
• High accuracy: Gain error is only ±0.1% (max)
• Low quiescent current: 21µA operating current, making it suitable for battery-powered applications
• Gain options: Available in gains of 20V/V, 50V/V, and 100V/V
• Extended temperature range: Operates from -40°C to +85°C, ensuring reliability in harsh environments

With its precision and low power consumption, the MAX4372HESA is an excellent choice for portable devices, consumer electronics, and industrial systems that require accurate current monitoring. Its robust design also makes it an ideal selection for automotive applications, where the ability to endure extreme temperatures and voltage conditions is essential.

Overall, the MAX4372HESA from Maxim Integrated stands out as a high-performance, reliable component for current sensing applications, providing designers with a versatile solution that combines accuracy, efficiency, and durability.