MAX4375TEUB-T

Overview

The MAX4375TEUB-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 voltage output eliminating gain-setting resistors and supports an input common-mode range of 0V to +28V independent of the supply voltage. It offers a fixed gain of +20V/V, a full-scale sense voltage of 150mV, and a maximum input offset voltage of 1mV. The operating temperature range is -40°C to +85°C.

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.
• Provides a direct voltage output proportional to the sensed current, removing the requirement for external gain-setting resistors.

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 in the part number implies non-RoHS compliance status compared to lead-free variants. Ensure the TEUB package designation matches the required 10-pin µMAX footprint for PCB layout compatibility.

Selection Notes

Select this component when a fixed +20V/V gain is sufficient for the target load current range. The integrated latching comparator simplifies circuit design by preventing output oscillation during fault conditions. Verify that the 50µA supply current meets strict power budget requirements for portable applications.

Part Context

This device belongs to the MAX4373/MAX4374/MAX4375 family of current-sense supervisors. While the MAX4373 provides a single comparator, the MAX4375 includes a second comparator to enable window-detection functions. All variants share the same core amplifier architecture and pinout structure within their respective package options.

Replacement Considerations

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

FAQ

How does the MAX4375 handle latch reset?

The comparator latch can be reset by pulsing the RESET pin low for at least 1.5µs. Holding the RESET pin low keeps the latch transparent.

What is the function of the CIN2 pin on the MAX4375?

CIN2 serves as the positive input for the second internal comparator, enabling window-detection functionality when used in conjunction with CIN1.