Maxim Integrated MAX4008EUT+T Low-Power, High-Side Current-Sense Amplifier

The MAX4008EUT+T from Maxim Integrated is a precision, low-power, high-side current-sense amplifier that is ideal for a wide range of applications where accurate current monitoring is essential. This highly integrated device offers a simple and effective solution for power management and battery monitoring tasks in portable devices, industrial systems, and automotive applications.

Designed to operate from a single 2.7V to 5.5V power supply, the MAX4008EUT+T is capable of sensing the voltage across shunt resistors over a wide common-mode range from 0V up to 28V, independent of the supply voltage. This feature allows the device to monitor battery cells or any other power supply line with high accuracy, even in the presence of load dump or cold-crank conditions commonly found in automotive environments.

The MAX4008EUT+T boasts a low input offset voltage of just 250µV (max) and an input bias current of only 10µA (max), which minimizes errors and power consumption. Its high accuracy and low offset make it suitable for sensing small currents in battery-powered applications. The device also features a wide input common-mode range, which makes it versatile for high-side current-sensing in various systems.

This current-sense amplifier is offered in a compact SOT23-6 package, making it an excellent choice for space-constrained applications. Its small size does not compromise its performance, as it provides a high gain bandwidth product of 200kHz and a slew rate of 0.3V/µs, ensuring swift response to changes in the sensed current.

Furthermore, the MAX4008EUT+T includes a voltage output that makes it easy to interface with analog-to-digital converters (ADCs) or microcontrollers for digital monitoring and feedback control. This integration simplifies the design process, reducing the need for additional external components and saving board space.

With its combination of high accuracy, low power consumption, and ease of use, the Maxim Integrated MAX4008EUT+T current-sense amplifier is a valuable component for designers looking to enhance system reliability and efficiency in their power management designs.