MAX4373TESA+

Overview

The MAX4373TESA+ is a low-cost, micropower high-side current-sense supervisor integrating a current-sense amplifier, bandgap reference, and latching comparator. It operates from a single +2.7V to +28V supply with a 50µA supply current. The device features a +20V/V gain, 0V to +28V common-mode input range, and ±2% full-scale accuracy. It includes an internal 600mV comparator threshold and is housed in an 8-pin SO package.

Feature Summary

• Integrated high-side current-sense amplifier with voltage output eliminating external gain-setting resistors
• Latching open-drain comparator output prevents oscillation during overcurrent shutdown events
• Internal bandgap reference provides stable 600mV threshold for precise current limiting
• Common-mode input range extends down to 0V, enabling monitoring during deep battery discharge

Applications

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

Procurement Notes

Verify the specific suffix 'ESA+' corresponds to the 8-pin SOIC package and lead-free/RoHS compliance status as indicated by the '+' designation. Confirm the 'T' suffix indicates the correct +20V/V gain variant. Ensure the component meets the required -40°C to +85°C operating temperature range for your specific application environment before finalizing procurement.

Selection Notes

Select this part when a compact, integrated solution for high-side current monitoring is required without external gain resistors. The +20V/V gain is suitable for applications requiring lower amplification factors compared to the +50V/V or +100V/V variants. Consider the latching comparator feature if system protection against repeated overcurrent spikes is necessary to prevent oscillation.

Part Context

This component belongs to the MAX4373/MAX4374/MAX4375 family of micropower supervisors. While the MAX4373 offers a single latching comparator, the MAX4374 and MAX4375 provide additional comparators for window detection functions. All variants share the same core amplifier architecture and power specifications but differ in pin count and comparator configurations.

Replacement Considerations

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