MAX17303G+

Overview

The MAX17303G+ is a ModelGauge m5 EZ fuel gauge IC designed for single-cell lithium-ion or polymer battery packs. It integrates SHA-256 authentication and a protector interface to monitor voltage, current, and temperature. The device utilizes the ModelGauge m5 algorithm to provide accurate state-of-charge readings in milliampere-hours or percentage. It features dynamic power functionality to determine maximum instantaneous output power. Communication is handled via a Maxim 1-Wire or I2C interface. The component is housed in a compact 14-pin TDFN package.

Feature Summary

• Integrates SHA-256 authentication with a unique 64-bit ID to prevent battery pack cloning
• Combines coulomb counting with voltage-based algorithms for high accuracy across varying conditions
• Provides dynamic power functionality to calculate maximum instantaneous battery output power
• Supports external high-side N-FET protection against overvoltage, undervoltage, and thermal faults

Applications

• Smartphones and tablets
• Smartwatches and wearable devices
• Medical devices and health monitors
• Digital cameras and action cams
• Handheld computers and terminals

Procurement Notes

Verify the specific suffix 'G+' indicates lead-free compliance and RoHS status according to the manufacturer's datasheet. Confirm the package type matches the required PCB footprint. Ensure the selected variant supports the necessary communication protocol for the target system design.

Selection Notes

Select this component for applications requiring precise state-of-charge monitoring in portable electronics. The integrated security features are suitable for systems needing anti-cloning protection. Consider the external FET requirements for the protection circuitry when designing the power path.

Part Context

This part belongs to the MAX17301–MAX17303 series of ModelGauge m5 EZ fuel gauges. These devices are engineered for 1-cell lithium-ion/polymer batteries. The series focuses on combining accurate fuel gauging with robust battery protection and data security in a small form factor.

Replacement Considerations

Check for other variants within the MAX17301–MAX17303 family that may offer different package options or authentication configurations. Verify compatibility with existing firmware if replacing an older fuel gauge model.