MAX4374TEUB+T

Overview

The MAX4374TEUB+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 +20V/V gain version, a 0 to +28V input common-mode range independent of supply voltage, and an operating temperature range of -40°C to +85°C. It is housed in a 10-pin µMAX package.

Feature Summary

• Integrates a high-side current-sense amplifier, internal bandgap reference, and comparator with latching output for simplified monitoring.
• Features a second comparator to enable window-detection functions for precise current threshold management.
• Provides a voltage output that eliminates the need for external gain-setting resistors.
• Operates with a 0 to +28V common-mode input range independent of the supply voltage.

Applications

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

Procurement Notes

Verify the specific suffix TEUB corresponds to the 10-pin µMAX package and +20V/V gain configuration. Confirm RoHS compliance status indicated by the plus sign. Ensure the application environment remains within the specified -40°C to +85°C temperature limits. Check for any obsolescence notices or lifecycle changes directly from Analog Devices documentation before finalizing procurement plans.

Selection Notes

Select this component when high-side current monitoring is required without interfering with the battery ground path. The integrated comparator with latching output prevents oscillation during overcurrent events. The second comparator allows for window detection applications. Ensure the required gain matches the +20V/V specification of the TEUB variant.

Part Context

This part belongs to the MAX4373/MAX4374/MAX4375 family of low-cost, micropower current-sense supervisors. The MAX4374 specifically includes two comparators for window detection, distinguishing it from the MAX4373 (one comparator) and MAX4375 (dual comparator with inverted logic). All variants share the same core amplifier and reference architecture.

Replacement Considerations

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

FAQ

How does the MAX4374 handle overcurrent conditions?

The MAX4374 uses a latching comparator output to provide a turn-off flag that prevents oscillation during overcurrent events. The latch can be reset by pulsing the RESET pin low for at least 1.5µs.

What is the function of the CIN2 pin on the MAX4374?

The CIN2 pin serves as the positive input for the second internal comparator, enabling window-detection functions when used in conjunction with the first comparator controlled by CIN1.

Is the common-mode input range dependent on the supply voltage?

No, the MAX4374 features a 0 to +28V input common-mode range that is independent of the supply voltage, allowing current monitoring even when connected to a battery pack in deep discharge.