MAX8904ETN+T

Overview

The MAX8904ETN+T is a highly integrated power management IC designed for dual-cell lithium-ion and lithium-polymer battery packs. It combines two switch-mode chargers, a system power path manager, and a fuel gauge within a single package. The device supports input voltages up to 25V and delivers charging currents of up to 3A per channel. Key electrical parameters include an output voltage range of 700mV to 5.5V, a switching frequency of 1MHz, and a static current of 2mA. It operates within a temperature range of -40°C to +85°C and utilizes a TQFN-EP-56 surface-mount package.

Feature Summary

• Integrates dual switch-mode chargers with system power path management for efficient energy distribution
• Includes an on-chip fuel gauge providing state-of-charge information and health monitoring
• Supports JEITA battery temperature monitoring for safe charging across varying environmental conditions

Applications

• Dual-cell battery packs in portable medical devices
• Power management for handheld industrial equipment
• Battery systems in consumer electronics requiring high efficiency

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when placing orders. Confirm that the component meets RoHS compliance standards required by your manufacturing process. Ensure compatibility with the 56-pin TQFN footprint during PCB layout. Check for any obsolescence notices or lifecycle changes from Analog Devices before finalizing procurement plans.

Selection Notes

Select this component for applications requiring dual-cell battery management with integrated fuel gauging. Consider the 1MHz switching frequency for optimizing external component size. Evaluate the thermal performance requirements given the high current capabilities. Ensure the input voltage range aligns with the available power source specifications.

Part Context

This part belongs to the Maxim Integrated portfolio, now part of Analog Devices Inc. It is categorized under Power Management ICs, specifically Battery Management. The MAX8904 series is designed to simplify the design of complex battery systems by combining multiple functions into a compact solution, reducing board space and component count.

Replacement Considerations

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