MAX4375FEUB-T

Overview

The MAX4375FEUB-T is a low-cost, micropower high-side current-sense supervisor integrating a current-sense amplifier, bandgap reference, and comparator with latching output. It operates from a single +2.7V to +28V supply with a typical supply current of 50µA. The device features a +50V/V gain version (suffix F) and an input common-mode range of 0V to +28V, independent of the supply voltage. It includes a second comparator for window-detection functions and is specified for operation over an extended temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-side current-sense amplifier, internal bandgap reference, and dual comparators into a single compact solution.
• Features a latching comparator output that provides a stable turn-off flag without oscillation during overcurrent events.
• Includes a second comparator dedicated to window-detection applications for monitoring current within specific upper and lower limits.

Applications

• Notebook Computers
• Portable/Battery-Powered Systems
• Smart Battery Packs/Chargers
• Cell Phones
• Power-Management Systems

Procurement Notes

Verify the exact ordering suffix against official documentation to confirm package type and RoHS compliance status. Confirm availability through authorized distributors as lead times may vary. Ensure the selected variant matches the required gain configuration (+50V/V for FEUB). Check for any recent lifecycle changes or obsolescence notices directly from Analog Devices before finalizing procurement plans.

Selection Notes

Select this component when high-side current monitoring is required in battery-powered systems where ground path interference must be avoided. The +50V/V gain is suitable for applications requiring moderate sensitivity. Consider the MAX4375 specifically if window detection functionality is needed alongside standard overcurrent protection. Ensure the external sense resistor power rating accommodates the expected load currents to prevent drift or failure.

Part Context

This part belongs to the MAX4373/MAX4374/MAX4375 family of low-cost, micropower current-sense supervisors. The MAX4375 variant distinguishes itself by including two comparators, enabling window-detection capabilities in addition to standard overcurrent limiting. The 'F' suffix indicates a fixed gain of +50V/V, while 'UB' denotes the 10-pin µMAX package.

Replacement Considerations

Direct substitutes within the same family include MAX4375TEUB+ (Gain +20V/V) and MAX4375HEUB+ (Gain +100V/V), which share identical pinouts and functionality but differ in amplifier gain. Other Maxim Integrated current-sense amplifiers may require circuit redesign due to differing pin configurations or interface requirements.