MAX4987AEETA+T

Specialized ICS Overview

The MAX4987AE is an overvoltage protection controller featuring a low 100mΩ internal nFET switch. It protects systems against voltage faults up to +28V, with a preset overvoltage threshold of 6.15V and undervoltage lockout at 2.55V. The device includes 1.5A minimum current-limit protection with 30ms autoretry functionality. Integrated ESD protection for USB data lines supports high-speed USB 2.0 signals with only 3pF capacitance. It operates from -40°C to +85°C in an 8-pin TDFN package.

Specialized ICS Feature Summary

• Integrated 100mΩ (typ) nFET switch for low insertion loss
• Overvoltage protection up to +28V with 6.15V trip level
• 1.5A minimum current limit with 30ms autoretry mode
• Low-capacitance (3pF) ESD protection for USB CD+/CD- lines

Specialized ICS Applications

• Cell Phones
• Media Players

Specialized ICS Procurement Notes

Verify the specific ordering suffix for tape and reel packaging when sourcing the MAX4987AEETA+T variant. Confirm that the component meets RoHS compliance standards as indicated by the '+' designation in the part number. Ensure the supplier provides valid traceability documentation for the Analog Devices Inc./Maxim Integrated product line.

Specialized ICS Selection Notes

Select this component for applications requiring robust overvoltage protection on low-voltage USB interfaces. The 100mΩ on-resistance minimizes power dissipation during normal operation. Consider the 30ms debounce time and autoretry interval when designing startup sequences or handling transient fault conditions in portable electronic devices.

Specialized ICS Part Context

This device belongs to the MAX4987 family of overvoltage protection controllers. It is specifically designed to safeguard sensitive downstream components from input voltage spikes while maintaining signal integrity for high-speed data lines. The integration of ESD protection eliminates the need for external protective components on USB ports.

Specialized ICS Replacement Considerations

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

Specialized ICS FAQ

What is the typical on-resistance of the internal switch?

The typical on-resistance (RON) of the internal nFET switch is 100mΩ.

How does the device handle short-circuit conditions?

The device features an autoretry function that turns the switch back on after a 30ms interval if the fault persists, repeating until the fault is removed.

What ESD protection levels are supported on the USB data lines?

The CD+ and CD- pins support ±15kV Human Body Model and ±15kV IEC61000-4-2 Air Gap ESD protection.