MAX4373FEUA

Overview

The MAX4373FEUA+ is a low-cost, micropower high-side current-sense supervisor integrating a current-sense amplifier, bandgap reference, and latching comparator. It operates from a single +2.7V to +28V supply with a 50µA typical supply current. The device features a fixed gain of +50V/V, a 0V to +28V common-mode input range independent of supply voltage, and an internal 600mV comparator threshold. It is specified for the -40°C to +85°C temperature range and housed in an 8-pin µMAX package.

Feature Summary

• Integrates a high-side current-sense amplifier, bandgap reference, and latching comparator into a single compact solution.
• Features a 0V to +28V common-mode input range that remains functional even during deep battery discharge conditions.
• Provides a latching open-drain output to prevent oscillation during overcurrent shutdown events.

Applications

• Notebook computers
• Portable and battery-powered systems
• Smart battery packs and chargers
• Cell phones
• Power-management systems

Procurement Notes

Verify the specific suffix 'FEUA+' corresponds to the +50V/V gain variant within the 8-pin µMAX package. Confirm RoHS compliance status as indicated by the '+' designation. Ensure the operating environment stays within the specified -40°C to +85°C temperature limits. Check for availability of the EVALUATION KIT if hardware validation is required.

Selection Notes

Select this component when a fixed +50V/V gain is appropriate for the target full-scale sense voltage. The integrated latching comparator simplifies overcurrent protection circuits by eliminating external latch components. Consider the 8-pin µMAX package constraints for board space limitations compared to SO packages.

Part Context

This part belongs to the MAX4373/MAX4374/MAX4375 family of low-cost, micropower high-side current-sense supervisors. The MAX4373 variant specifically includes one comparator, whereas the MAX4374 and MAX4375 include two comparators for window detection functions. All variants share the same core amplifier architecture and power specifications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.