MAX17302X+

Overview

The MAX17302X+ is a standalone, pack-side fuel gauge IC designed for single-cell lithium-ion and lithium-polymer batteries. It integrates the ModelGauge m5 algorithm to provide high-accuracy state-of-charge (SoC) measurements in milliampere-hours or percentage. The device monitors battery voltage, current, and temperature while offering comprehensive protection against over-voltage, under-voltage, over-current, short-circuit, and thermal extremes using external high-side N-FETs. It features SHA-256 authentication with a unique 64-bit ID to prevent cloning and supports I2C communication.

Feature Summary

• Integrates ModelGauge m5 algorithm for accurate SoC tracking across varying temperatures and discharge rates
• Includes SHA-256 authentication with a unique 64-bit ID to secure battery packs against cloning
• Provides hardware protection functions including over/under-voltage, over-current, and thermal safeguards via external FETs
• Supports dynamic power functionality to calculate maximum instantaneous battery output power

Applications

• Smartphones and tablets
• Wearable devices and smartwatches
• Medical devices and health monitors
• Digital cameras and action cams

Procurement Notes

Verify the specific suffix 'X+' indicates the lead-free RoHS-compliant tape-and-reel packaging variant when ordering. Confirm that the component requires an external high-side N-FET configuration for its protection circuitry. Ensure the design accommodates the required I2C interface connections and that the SHA-256 key provisioning aligns with system security requirements before finalizing procurement.

Selection Notes

Select this component for applications requiring precise battery life estimation and anti-cloning security in portable electronics. It is suitable for designs needing integrated protection logic without complex external microcontroller intervention. Consider the 14-pin TDFN package constraints for PCB layout. Verify compatibility with the host system's I2C bus speed and voltage levels.

Part Context

This part belongs to the MAX17301–MAX17303 series of ModelGauge m5 EZ Fuel Gauges. These devices are engineered for compact, high-performance portable systems. The series combines coulomb counting with voltage-based calibration to maintain accuracy over the battery's lifecycle. They are distinct from standard voltage-only gauges by providing detailed current integration data.

Replacement Considerations

Public confirmed substitute part numbers: MAX17301X+, MAX17303X+. These variants share the same core ModelGauge m5 functionality and package options but may differ in specific factory-programmed parameters or authentication keys.