MAX17201G+T

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MAX17201G+T is a highly integrated high accuracy fuel gauge and battery fuel supervisory IC that offers a comprehensive set of features for high-performance, high-capacity Li-Ion and Li-Polymer battery systems.

This device operates as a self-contained battery fuel gauge that uses a ModelGauge m5 algorithm to estimate battery capacity. It has internal voltage, current, and temperature sensing, interfacing to the host microcontroller through I²C, SMBus, and Maxim’s GaugeMo interface. Data communication between the IC and host is used to provide additional information such as fuel gauge data, system health details, cell characteristics, battery profile, etc. The IC supports both ModelGauge m5 algorithm and Celsius dashboard configuration.

MAX17201G+T is ideal for applications with small to mid-sized batteries, such as cell phones, tablets, wearables, IoT devices, cameras, and many others. It also integrates features that are especially useful in automotive and industrial applications. It offers a variety of features and functionalities that allow designers to ensure the accurate and stable operation of battery-powered devices.

Application Field

The application field for MAX17201G+T is vast. This integrated fuel gauge is optimized for use in high-performance, high-capacity Li-Ion and Li-Polymer battery systems. It is a popular IC for applications requiring tight control of the battery system such as cell phones, tablets, wearables, IoT devices, cameras, automotive, and industrial applications. It is also an ideal choice for medical devices and military/aerospace applications where precise power management and battery life management is required.

Working Principle

The MAX17201G+T battery fuel gauge has integrated voltage and current sensing, as well as temperature measurement capabilities. This data is used in the ModelGauge m5 algorithm, which estimates battery capacity and provides state of charge (SoC) and state of health (SoH) information. In addition, the chip is equipped with a compander algorithm, which is used to compress the battery’s open circuit voltage (OCV) when the battery is in use, so that the fuel gauge accuracy is maintained over the entire battery’s discharge cycle. The IC is also capable of providing additional system health details, such as cell characteristics, profiles, etc. Furthermore, the IC supports the Celsius dashboard configuration, which is a feature that allows monitoring and enhancement of battery system characteristics.

The MAX17201G+T also includes a self-test and sleep mode, which allow the fuel gauge to detect and isolate any malfunctioning cells in the battery. This device is self-calibrating, allowing it to automatically adjust for any offset in the sensed cell characteristics. In addition, the fuel gauge is designed to be very robust to the effects of temperature and other environmental conditions, allowing it to remain highly accurate and stable throughout the full range of operating conditions.

The MAX17201G+T is an invaluable fuel gauge for modern battery systems. Its integrated voltage and current sensing, temperature measurement, compander algorithm, self-test and sleep mode, and the ModelGauge m5 algorithm allow designers to have precise control over their battery system’s performance and overall safety. Its data communications protocol and Celsius dashboard configuration provide additional information for system monitoring and optimization. In addition, its compact size and low power consumption make it ideal for small battery-powered devices.

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