MAX17320G20+

Overview

The MAX17320G20+ is a stand-alone pack-side fuel gauge IC designed for 2 to 4 series lithium-ion or polymer battery cells. It integrates the ModelGauge m5 algorithm with a built-in protector and offers optional SHA-256 authentication. Key electrical specifications include an operating supply voltage range of 4.2 V to 18 V, output voltages of 1.8 V and 3.4 V, and an output current capability of 2 mA. The device features a low quiescent current of 38 µA and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates ModelGauge m5 E algorithm for accurate state-of-charge estimation
• Includes integrated protector with fault protection capabilities
• Supports optional SHA-256 authentication for security
• Detects battery internal self-discharge

Applications

• Industrial equipment
• Automotive systems
• Aerospace electronics

Procurement Notes

Verify the specific suffix G20 against the official Analog Devices datasheet to confirm package type and temperature grade. Ensure compatibility with I2C interface requirements. Confirm that the selected variant meets the necessary safety certifications for your target application environment before finalizing procurement.

Selection Notes

Select this component when high accuracy in state-of-charge measurement is required for multi-cell battery packs. The integrated protector simplifies design by reducing external component count. Consider the optional SHA-256 feature if data integrity and anti-counterfeiting are critical for the end product.

Part Context

This part belongs to the MAX17320 family of fuel gauges from Maxim Integrated, now part of Analog Devices. It is specifically engineered for applications requiring precise battery monitoring in compact form factors. The TQFN-24 package facilitates surface-mount assembly in space-constrained designs.

Replacement Considerations

Consult official Analog Devices documentation for direct pin-to-pin replacements. Verify that any substitute maintains the same ModelGauge algorithm version and I2C interface compatibility to ensure seamless integration without firmware modifications.