Maxim Integrated MAX4081FAUA+ High-Side Current-Sense Amplifier

The MAX4081FAUA+ 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, efficient device is suitable for a wide range of applications, including battery charging, motor control, and power management in portable devices.

With its ability to measure the voltage across a current-sense resistor situated in the high side of a battery or power supply, the MAX4081FAUA+ enables accurate current monitoring without disrupting the ground path of the load. This feature is particularly beneficial in systems where ground disturbance can cause data corruption or signal integrity issues.

Key Features:

• Wide Input Common-Mode Range: The device operates over a wide common-mode voltage range from 4.5V to 76V, making it ideal for both low and high voltage systems.
• High Accuracy: The MAX4081FAUA+ offers a low input offset voltage, which translates to precise current measurement, even at low current levels.
• Low Power Consumption: With its quiescent current of just 100µA, the device is optimized for battery-powered and energy-efficient applications.
• Gain Options: The amplifier is available with a fixed gain of 20V/V, which simplifies the design process by eliminating the need for external gain-setting components.
• Small Package: Housed in a compact 8-pin µMAX package, the MAX4081FAUA+ saves valuable board space in space-constrained applications.

Applications:

• Battery-powered devices
• Power management systems
• Motor control circuits
• Overcurrent protection
• Automotive and industrial systems

The MAX4081FAUA+ is engineered to provide a robust and reliable solution for real-time current monitoring. Its high level of integration and performance, combined with Maxim Integrated's reputation for quality, makes it an excellent choice for designers looking to enhance the safety and efficiency of their power management systems.