MAX17320G22+T

Overview

The MAX17320G22+T is a battery fuel gauge IC designed for 2 to 4 series-connected lithium-ion or polymer cells. It features a ModelGauge m5 algorithm for accurate state-of-charge measurement and includes an integrated protection circuit with over-current, over-temperature, and short-circuit fault protection. The device operates on a supply voltage of 4.2 V to 18 V and provides a 2 mA output current at selectable voltages of 1.8 V or 3.4 V. It utilizes an I2C interface for communication and is housed in a TQFN-24 package.

Feature Summary

• Integrates ModelGauge m5 algorithm for precise battery monitoring
• Includes built-in protection against electrical faults
• Supports multi-cell battery pack configurations

Applications

• Laptop computers
• Portable medical devices
• Industrial handheld tools

Procurement Notes

Verify the suffix +T indicates tape-and-reel packaging when sourcing components. Confirm the specific operating temperature range and pin configuration match the target design requirements before finalizing procurement orders.

Selection Notes

Select this component for applications requiring high accuracy in state-of-charge estimation without external microcontrollers. Ensure the system supports the required I2C communication protocol and that the thermal environment remains within the specified operational limits for reliable performance.

Part Context

This part belongs to the MAX17320 family of independent battery pack-side fuel gauges. It is engineered for portable electronics where space efficiency and power management are critical. The integration of sensing and protection reduces the bill of materials compared to discrete solutions.

Replacement Considerations

Check for MAX17320G22+ as a potential leaded alternative if surface-mount constraints differ. Verify compatibility with existing firmware and hardware layouts before substituting.