MAX4375HEUB

Overview

The MAX4375HEUB+ 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 +100V/V gain version (suffix H) 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 precise upper and lower current limits.
• Operates with a wide 0V to +28V common-mode input range that remains functional even during deep battery discharge.

Applications

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

Procurement Notes

Verify the specific suffix 'H' confirms the +100V/V gain configuration required for the design. Confirm the 'UB' package code corresponds to the 10-pin µMAX format. Ensure the '+T&R' or standard tape-and-reel packaging matches assembly requirements. Check for RoHS compliance status indicated by the '+' suffix in ordering information.

Selection Notes

Select this component when high-side monitoring is critical to avoid ground path interference in battery systems. The +100V/V gain is suitable for applications requiring higher sensitivity with smaller sense resistors. The dual-comparator architecture enables complex window-detection logic without external components. Verify that the 50µA quiescent current aligns with strict power budget constraints.

Part Context

This part belongs to the MAX4373/MAX4374/MAX4375 family of low-cost, micropower current-sense supervisors. While the MAX4373 offers a single comparator, the MAX4375 variant specifically adds a second comparator for window detection. All variants share the same core amplifier and reference architecture but differ in comparator count and gain options.

Replacement Considerations

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