MAX4959EUB+

Specialized ICS Overview

The MAX4959EUB+ is an overvoltage protection controller designed to safeguard low-voltage systems up to 28 V. It features battery-switchover functionality and utilizes resistor-programmable trip levels for both overvoltage (6- to 28-V) and undervoltage (5- to 28-V) conditions. The device actively controls an external PFET, turning it off when input voltage exceeds the set threshold and maintaining this state until the voltage recovers above the undervoltage-lockout level.

Specialized ICS Feature Summary

• Resistor-programmable overvoltage trip levels ranging from 6 V to 28 V
• Resistor-programmable undervoltage lockout thresholds from 5 V to 28 V
• Integrated battery-switchover capability for system protection
• External PFET control with hold-off logic until recovery

Specialized ICS Applications

• PC power supply protection
• PDA circuit protection

Specialized ICS Procurement Notes

Verify the specific ordering suffix against official Analog Devices documentation to confirm package type and temperature range. Confirm RoHS compliance status through current manufacturer datasheets before procurement.

Specialized ICS Selection Notes

Select appropriate external resistors to define precise overvoltage and undervoltage thresholds within the 5 V to 28 V operating window. Ensure the external PFET selected can handle the maximum system voltage and current requirements.

Specialized ICS Part Context

This component belongs to the Maxim Integrated line of specialized ICs focused on power management and protection. It serves as a critical safety interface in systems requiring robust defense against transient voltage spikes and reverse polarity events.

Specialized ICS Replacement Considerations

Consult the official Analog Devices replacement matrix for verified cross-reference part numbers. Do not assume functional equivalence with other OVP controllers without verifying pin compatibility and threshold programming methods.