MAX4373TEUA-T

Overview

The MAX4373TEUA-T 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 typical supply current of 50µA. The device features a +20V/V gain, a 0V to +28V common-mode input range independent of supply voltage, and a maximum input offset voltage of 1mV. It provides a voltage output eliminating external gain-setting resistors and includes a latching comparator output to prevent oscillation during overcurrent events.

Feature Summary

• Integrates a high-side current-sense amplifier, internal bandgap reference, and latching comparator for simplified monitoring.
• Features a 0V to +28V common-mode input range that remains functional even during deep battery discharge.
• Provides a latching open-drain comparator output to eliminate oscillation during overcurrent shutdown conditions.

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm the absence of the '+' symbol denotes standard leaded composition rather than RoHS-compliant lead-free material. Ensure the TEUA package code corresponds to the 8-pin µMAX format. Cross-reference the manufacturer's latest ordering guide for any potential lifecycle status changes or alternative package options.

Selection Notes

Select this component when high-side current monitoring is required without interfering with the ground path. The integrated latching comparator simplifies overcurrent protection circuits by preventing output oscillation. The wide common-mode range ensures accurate sensing across varying battery states, including deep discharge scenarios where other amplifiers may fail.

Part Context

This part belongs to the MAX4373/MAX4374/MAX4375 family of micropower current-sense supervisors. The MAX4373 variant specifically includes a single latching comparator, whereas the MAX4374 and MAX4375 add a second comparator for window detection functions. All variants share the same core amplifier architecture and power specifications.

Replacement Considerations

Direct substitutes within the same family include MAX4373FEUA-T (+50V/V gain) and MAX4373HEUA-T (+100V/V gain). Other packages such as MAX4373TESA-T (8-pin SO) offer identical electrical performance in different form factors. Verify pin compatibility and gain requirements before substitution.