MAX4375FESD+

Overview

The MAX4375FESD+ 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 supply voltage. The specific F suffix indicates a fixed gain of +50V/V. The comparator output latches to prevent oscillation during overcurrent events.

Feature Summary

• Integrated high-side current-sense amplifier with internal bandgap reference
• Latching open-drain comparator output prevents oscillation during fault conditions
• Voltage output eliminates need for external gain-setting resistors
• Common-mode input range extends from 0V to +28V regardless of supply voltage

Applications

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

Procurement Notes

Verify the complete part number including suffixes such as package type and temperature range against official manufacturer documentation. Confirm RoHS compliance status and lead-free specifications directly from the datasheet. Ensure the ordering information matches the required gain version and pin configuration for the specific application design.

Selection Notes

Select this component when high-side monitoring is required without interfering with the ground path. The +50V/V gain suits applications requiring specific full-scale sense voltages. Consider the latching comparator feature for critical overcurrent protection where oscillation must be avoided. Verify that the 14-pin SOIC package fits the board layout constraints.

Part Context

This device belongs to the MAX4373/MAX4374/MAX4375 family of current-sense supervisors. The MAX4375 variant includes two comparators for window detection functions. The 'F' designation specifies a gain of +50V/V, while 'H' denotes +100V/V and 'T' denotes +20V/V. All variants share the same core architecture and power characteristics.

Replacement Considerations

MAX4375FEUB+