MAX4375FESD-T

Overview

The MAX4375FESD-T is a low-cost, micropower high-side current-sense supervisor integrating an amplifier, comparator, and bandgap reference. It features a +50V/V gain version with a 0 to +28V common-mode input range independent of supply voltage. The device operates from a single +2.7V to +28V supply, consuming 50µA typical supply current. It includes a latching open-drain comparator output controlled by CIN1 and RESET pins, plus a second unlatched comparator output at COUT2 for window detection functions.

Feature Summary

• Integrated high-side current-sensing solution eliminating external gain-setting resistors
• Latching comparator output prevents oscillation during overcurrent shutdown events
• Dual-comparator architecture enables precise window-detection applications
• Operates effectively down to 0V common-mode voltage for deep-discharge battery monitoring

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm the 'F' designation corresponds to the +50V/V gain variant. Ensure the 'SD' package code matches the required 14-pin SO footprint. Cross-reference the lead-free '+' status if RoHS compliance is mandatory for the assembly process.

Selection Notes

Select this component when a fixed +50V/V gain is required for specific full-scale sense voltages. The dual-comparator design supports complex window-detection logic not available in single-comparator variants. Verify that the 14-pin SO package dimensions fit the target PCB layout constraints compared to the smaller µMAX options.

Part Context

This part belongs to the MAX4373/MAX4374/MAX4375 family of micropower current-sense supervisors. The MAX4375 specifically provides two comparators for window detection, distinguishing it from the single-comparator MAX4373. The F suffix denotes the +50V/V gain option, while H indicates +100V/V and T indicates +20V/V.

Replacement Considerations

Direct functional substitutes within the same family include MAX4375FEUB+ (µMAX package) or MAX4375HESD+/MAX4375TESD+ (different gain versions). Verify pin compatibility and package dimensions before substituting.