MAX4374TEUB+TG05

Overview

The MAX4374TEUB+TG05 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 'T' suffix indicates a fixed gain of +20V/V. The package is a 10-pin µMAX.

Feature Summary

• Integrated high-side current-sense amplifier with internal bandgap reference
• Latching open-drain comparator output for overcurrent protection
• Second comparator available for window-detection functions
• Voltage output eliminates 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 exact ordering suffix against manufacturer documentation to confirm package type and temperature range. Confirm RoHS compliance status as indicated by the '+' symbol in the part number. Ensure the '+TG05' suffix matches the required reel or tape specifications if applicable. Cross-reference the datasheet revision history for any recent updates to electrical characteristics or pin configurations before finalizing procurement.

Selection Notes

Select this component when high-side monitoring is required without interfering with the ground path. The +20V/V gain is suitable for applications requiring lower sensitivity compared to the +50V/V or +100V/V variants. Consider the 10-pin µMAX package for space-constrained designs. Verify that the system's maximum load current will not exceed the full-scale sense voltage limits defined by the chosen gain.

Part Context

This device belongs to the MAX4373/MAX4374/MAX4375 family of current-sense supervisors. The MAX4374 variant specifically includes two comparators: one latching comparator for overcurrent shutdown and a second comparator for window detection. This distinguishes it from the MAX4373 (single comparator) and complements the MAX4375 which offers different comparator polarity options.

Replacement Considerations

Direct substitutes within the same family include MAX4374FEUB+ (Gain +50V/V) and MAX4374HEUB+ (Gain +100V/V). These share identical pinouts and functionality but differ in amplifier gain. Ensure the application circuitry can accommodate the different full-scale sense voltages associated with these alternative gain settings.