MAX17311G+

Overview

The MAX17311G+ is a 1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication. It operates as a 24µA IQ standalone pack-side fuel gauge IC for 1-cell lithium-ion/polymer batteries. The device monitors voltage, current, temperature, and state of charge (SOC) to provide protection against over/undervoltage, overcurrent, short-circuit, and thermal conditions using external high-side N-FETs. It integrates SHA-256 authentication with a 160-bit secret key and unique 64-bit ID to prevent cloning. Available in a 3mm x 3mm 14-pin TDFN package.

Feature Summary

• Integrates ModelGauge m5 algorithm combining coulomb counting and voltage-based fuel gauge for accurate SOC estimation.
• Includes SHA-256 authentication with 160-bit secret key and unique 64-bit ID for battery pack security.
• Provides comprehensive battery protection against electrical and thermal faults via external high-side N-FETs.
• Supports dynamic power functionality to determine maximum instantaneous battery output power.

Applications

• Smartphones and tablets
• Smartwatches and wearables
• Medical devices and health monitors
• Digital cameras and action cams

Procurement Notes

Verify the specific suffix 'G+' indicates lead-free and RoHS compliance status according to Analog Devices official documentation. Confirm the package marking and date code align with production requirements. Ensure the supplier is an authorized distributor to guarantee authenticity of the integrated SHA-256 keys and calibration data. Check for any recent product change notices affecting pinout or electrical characteristics.

Selection Notes

Select this component when single-cell lithium-ion or polymer battery monitoring with high accuracy is required. The ModelGauge m5 algorithm compensates for cell aging, temperature, and discharge rate variations. Choose this part if SHA-256 authentication is necessary to prevent unauthorized battery cloning. Consider the 24µA standby current for applications requiring extended battery life in sleep modes.

Part Context

The MAX17311G+ belongs to the MAX17301–MAX17303/MAX17311–MAX17313 family of fuel gauges. These devices are designed for portable electronics requiring precise state-of-charge tracking. The family utilizes the ModelGauge m5 algorithm for industry-leading accuracy. The G+ suffix typically denotes environmental compliance and specific packaging options within the Maxim Integrated portfolio.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices official documentation for cross-reference information or updated product line replacements.