MAX4374FEUB

Overview

The MAX4374FEUB+ is a low-cost, micropower high-side current-sense supervisor integrating a current-sense amplifier, bandgap reference, and comparator with latching output. It features a +50V/V gain version in an 8-pin µMAX package. The device operates from a single +2.7V to +28V supply, consuming 50µA. It supports a 0V to +28V common-mode input range independent of supply voltage. The integrated comparator provides a turn-off flag without oscillation.

Feature Summary

• Integrates a high-side current-sense amplifier, internal bandgap reference, and a latching comparator for simplified monitoring.
• Features a +50V/V fixed gain configuration suitable for specific battery pack sensitivity requirements.
• Provides a voltage output that eliminates the need for external gain-setting resistors.
• Includes a second comparator on the MAX4374 variant to enable window-detection functions.

Applications

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

Procurement Notes

Verify the complete part number includes the '+' suffix for lead-free/RoHS compliance when ordering. Confirm the specific 'F' suffix corresponds to the required +50V/V gain setting for your circuit design. Ensure the 10-pin µMAX package footprint matches your PCB layout constraints. Check for any specific temperature grade requirements within the -40°C to +85°C operating range.

Selection Notes

Select this component if a fixed +50V/V gain is required for high-side current sensing applications. Consider the MAX4374 specifically for its dual-comparator architecture enabling window detection capabilities. Evaluate the 50µA supply current against strict power budget constraints in portable devices. Verify that the 0V to +28V common-mode range aligns with the system's battery discharge characteristics.

Part Context

This device belongs to the MAX4373/MAX4374/MAX4375 family of low-cost, micropower high-side current-sense supervisors. The family offers three gain options (+20V/V, +50V/V, +100V/V) and varies by comparator count (single vs. dual). The MAX4374 specifically adds a second comparator for window detection compared to the single-comparator MAX4373.

Replacement Considerations

Direct substitutes include other MAX4374 variants with different gains or packages, such as MAX4374TEUB+ (+20V/V) or MAX4374HEUB+ (+100V/V). Cross-family replacements like MAX4373 or MAX4375 require verifying comparator count compatibility.