The MAX4073HEUT from Maxim Integrated is a high-side current-sense amplifier that offers a compact and precise solution for current measurement in a variety of applications. This device is designed to detect the current passing through a shunt resistor placed in the high side of the circuit, which allows for easy detection of load currents without interfering with the ground path of the load.

Key Features

• Wide Input Common-Mode Range: Operates from 4V to 28V, making it suitable for a broad range of applications, including battery-powered and automotive systems.
• Low Quiescent Current: The device consumes minimal power with a quiescent current of only 24µA, which is ideal for portable and battery-operated equipment.
• High Accuracy: Features a low input offset voltage, which enhances the accuracy of current measurements, essential for precise monitoring and control.
• Precision Gain: The MAX4073HEUT has a fixed gain of 20V/V, providing a high level of amplification for small voltage drops across the shunt resistor.
• Small Package: Available in a tiny 6-pin SOT23 package, it saves valuable board space in compact designs.

Applications

This current-sense amplifier is well-suited for a range of applications, including:

• Battery monitoring
• Power management systems
• Overcurrent protection
• Automotive systems
• Portable devices

Design Flexibility

The MAX4073HEUT enables design flexibility with its wide input voltage range and low power consumption. It can be used in systems where battery life is critical, and its high-side sensing ability allows for continuous operation even during battery charging. The precision and compact design make it an excellent choice for designers looking for reliable current sensing in space-constrained applications.