MAX4375TEUB+

Overview

The MAX4375TEUB+ 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 0V to +28V common-mode input 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 a latching comparator for simplified overcurrent protection without oscillation.
• Features a wide 0V to +28V common-mode input range that remains functional even during deep battery discharge conditions.
• Includes a second comparator channel specifically designed to enable window-detection functions for precise current monitoring.

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 with +20V/V gain. Confirm RoHS compliance status as indicated by the plus sign. Ensure the application requires the dual-comparator window detection capability unique to the MAX4375 series compared to the MAX4373.

Selection Notes

Select this part when a high-side current monitor with window detection is required. The +20V/V gain suits applications where a larger sense resistor or lower full-scale voltage is preferred. Verify that the 10-pin µMAX footprint fits the design constraints and that the 50µA quiescent current meets power budget requirements.

Part Context

This component belongs to the MAX4373/MAX4374/MAX4375 family of micropower supervisors. Unlike the MAX4373 (single comparator) and MAX4374 (dual comparator), the MAX4375 provides two comparators configured for window detection. It shares the same core amplifier architecture and power specifications as its siblings.

Replacement Considerations

Direct substitutes within the same family include MAX4375FEUB+ (+50V/V gain) and MAX4375HEUB+ (+100V/V gain). Other packages such as MAX4375TESD+ are available but require pinout verification due to different pin counts.

FAQ

How does the MAX4375 differ from the MAX4373?

The MAX4375 includes a second comparator channel (CIN2/COUT2) enabling window detection, whereas the MAX4373 contains only one comparator for simple overcurrent limiting.

What is the function of the RESET pin?

The RESET pin controls the latch function of the first comparator. Holding it low disables the latch, while pulsing it low resets the latched output state.