MAX4374FEUB+T

Overview

The MAX4374FEUB+T is a low-cost, micropower high-side current-sense supervisor featuring an integrated amplifier, comparator, and bandgap reference. It operates from a single +2.7V to +28V supply with a typical supply current of 50µA. The device provides a voltage output proportional to the sense resistor voltage drop, eliminating external gain-setting resistors. It features a 0V to +28V common-mode input range independent of the supply voltage. The specific variant offers a fixed gain of +50V/V and includes two comparators for window-detection functions.

Feature Summary

• Integrated high-side current-sense amplifier with internal bandgap reference
• Dual open-drain comparators enabling window-detection applications
• Latching comparator output prevents oscillation during overcurrent events
• Voltage output design removes the need for external gain-setting resistors

Applications

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

Procurement Notes

Verify the package type matches the required footprint, as this part utilizes a 10-pin µMAX package. Confirm that the lead-free/RoHS-compliant suffix (+) aligns with environmental compliance requirements. Ensure the operating temperature range of -40°C to +85°C meets the system's thermal specifications before finalizing procurement.

Selection Notes

Select this component when dual comparators are necessary for precise window detection rather than simple overcurrent limiting. The +50V/V gain suits applications requiring moderate amplification of the sense voltage. Verify that the 10-pin µMAX package fits the board layout constraints compared to the 8-pin alternatives available in the series.

Part Context

This device belongs to the MAX4373/MAX4374/MAX4375 family of supervisors. While the MAX4373 contains one comparator, the MAX4374 adds a second comparator for window detection. The 'F' designation indicates a fixed gain of +50V/V, distinguishing it from the +20V/V and +100V/V variants within the same product line.

Replacement Considerations

The MAX4373FEUB+ serves as a functional substitute if only a single comparator is required. For identical dual-comparator functionality, consider the MAX4375FEUB+, which shares the same gain and package but reverses the polarity configuration of the second comparator.