MAX17320G12+

Overview

The MAX17320G12+ is a standalone battery pack-side fuel gauge IC designed for 2 to 4 series lithium-ion or polymer cells. It features ultra-low quiescent current of 38µA and integrates ModelGauge m5 EZ algorithms for accurate state-of-charge estimation. The device includes built-in protection against over-current, over-temperature, over/under voltage, and short circuits. Communication occurs via a 1-Wire interface within a compact 24-TQFN (4x4) package.

Feature Summary

• Integrates ModelGauge m5 EZ algorithm for precise fuel gauging without external calibration
• Provides comprehensive fault protection including over-current, thermal, and voltage safeguards
• Operates with ultra-low 38µA quiescent current to maximize battery life
• Supports SHA-256 authentication for secure system identification

Applications

• Industrial equipment requiring reliable battery monitoring
• Automotive subsystems needing robust power management
• Aerospace electronics demanding high reliability

Procurement Notes

Verify the exact suffix G12+ confirms the lead-free RoHS-compliant packaging and specific tape-and-reel or tube configuration as per the manufacturer's latest datasheet. Confirm the 24-TQFN footprint matches your PCB design. Ensure compatibility with the 1-Wire protocol implementation in your host system before finalizing procurement.

Selection Notes

Select this component when designing systems with 2 to 4 series Li-ion or Li-Po batteries requiring low standby current. It is suitable for applications needing integrated protection alongside fuel gauging. Consider the 1-Wire interface constraints and the need for SHA-256 security if applicable. Evaluate the 38µA IQ impact on overall system power budget.

Part Context

This part belongs to the MAX17320 family of fuel gauges from Analog Devices/Maxim Integrated. It targets portable and industrial devices where space and power efficiency are critical. The G12+ designation specifies the package type and commercial temperature range variants within the broader product line.

Replacement Considerations

Check for direct pin-to-pin replacements within the MAX17320 series or compatible ModelGauge-enabled parts from Analog Devices. Verify that any substitute maintains the 1-Wire interface and supports the required cell count range.