MAX1977EEI+

Overview

The MAX1977EEI+ is a multi-output linear regulator controller optimized for notebook power systems. It features four distinct outputs and operates with an input voltage range of 4.5V to 24V. The device is housed in a 28-SSOP (0.154", 3.90mm Width) package, also referred to as 28-QSOP. Designed for high-efficiency power management, it supports complex voltage sequencing and monitoring requirements typical in portable computing applications.

Feature Summary

• Multi-output control architecture supporting four independent regulated rails
• Optimized topology for notebook and portable computer power systems
• Wide input voltage compatibility ranging from 4.5V to 24V

Applications

• Notebook power system regulation
• Portable computer motherboard voltage generation
• Multi-rail DC-DC controller interfaces

Procurement Notes

Verify component authenticity through authorized Analog Devices or Maxim Integrated distributors. Confirm the specific suffix 'E' indicates industrial temperature range and '+ denotes lead-free/RoHS compliance. Check current lifecycle status as legacy components may have limited availability or require alternative sourcing strategies.

Selection Notes

Select this controller when designing multi-voltage architectures for notebooks requiring precise sequencing. Ensure the 4.5V to 24V input range matches the system's primary battery or adapter profile. Verify that the 28-pin QSOP footprint fits the PCB layout constraints compared to newer, smaller packages.

Part Context

Part of the MAX1977 family of power management ICs designed by Maxim Integrated, now part of Analog Devices. This series targets the demanding power delivery needs of mobile computing devices, providing integrated control for multiple output stages to ensure stable operation during various power states.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer cross-reference guides for potential functional equivalents if this specific part number is discontinued or unavailable.