MAX17320X20+

Overview

The MAX17320X20+ is a stand-alone fuel gauge IC designed for 2S to 4S lithium-ion or lithium-polymer battery packs. It utilizes the ModelGauge m5 EZ algorithm to provide accurate State of Charge (SOC) estimation without requiring cell characterization. The device integrates a Li-protector, internal self-discharge detection, and SHA-256 authentication capabilities. It operates within a supply voltage range of 2.7V to 5.5V and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Implements ModelGauge m5 EZ algorithm for precise SOC estimation without battery characterization
• Integrates Li-protector functionality for enhanced pack safety
• Includes internal self-discharge detection to monitor cell health
• Features SHA-256 authentication for secure data integrity

Applications

• Laptop computers and notebooks
• Portable medical devices
• Power tools and industrial equipment
• Uninterruptible power supplies (UPS)

Procurement Notes

Verify the specific suffix 'X20+' against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with the target battery chemistry and system voltage requirements before integration. Cross-reference the component marking code with official documentation to prevent counterfeit substitution.

Selection Notes

Select this component for applications requiring high accuracy in multi-cell battery packs without complex calibration procedures. The integrated protector simplifies bill of materials by reducing external protection components. Consider the SHA-256 feature if security against unauthorized battery replacement is a priority.

Part Context

This part belongs to Maxim Integrated's ModelGauge family of fuel gauges. It is designed as a drop-in solution for systems previously using separate fuel gauge and protection ICs. The X20+ designation typically indicates a specific tape and reel packaging configuration suitable for automated assembly processes.

Replacement Considerations

Direct replacements include the MAX17261 or MAX17262 for single-cell applications, though pinouts may differ. For multi-cell setups, verify functional equivalence with the MAX17320G1 variant. Always validate electrical characteristics and software compatibility when substituting.