MAX4374HEUB

Overview

The MAX4374HEUB+ 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 +100V/V gain version in a 10-pin µMAX package. The device operates from a single +2.7V to +28V supply with 50µA typical supply current. It provides a 0V to +28V common-mode input range independent of the supply voltage. The internal comparator threshold is typically 600mV.

Feature Summary

• Integrated high-side current-sensing solution simplifies monitoring without external gain-setting resistors
• Latching comparator output prevents oscillation during overcurrent shutdown events
• Second comparator enables window-detection functions for precise current limits
• Operates effectively down to 0V common-mode voltage for deep battery discharge monitoring

Applications

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

Procurement Notes

Verify the specific ordering suffix HEUB corresponds to the 10-pin µMAX package with +100V/V gain. Confirm RoHS compliance status indicated by the plus sign. Ensure the operating temperature range matches the -40°C to +85°C specification. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm availability and pinout configuration.

Selection Notes

Select this component when high-side current monitoring is required in battery-powered applications. The +100V/V gain is suitable for detecting small sense voltages across low-value resistors. The integrated latching comparator eliminates the need for external logic to prevent oscillation. Verify that the application requires the additional second comparator available in the MAX4374 variant for window detection capabilities.

Part Context

This device belongs to the MAX4373/MAX4374/MAX4375 family of micropower current-sense supervisors. The MAX4374 specifically includes two comparators, whereas the MAX4373 has one and the MAX4375 offers a second comparator with inverted polarity. All variants share the same core amplifier architecture and power specifications.

Replacement Considerations

Compatible substitutes include MAX4373HEUB+ (single comparator) and MAX4375HEUB+ (dual comparator with inverted polarity). These parts share identical pinouts and electrical characteristics except for the comparator configuration.