Overview
The MAX17260SETD+T is an ultra-low power fuel gauge IC developed by Analog Devices Inc./Maxim Integrated. This component implements the ModelGauge™ m5 EZ algorithm, designed to monitor single-cell battery packs with high accuracy and efficiency. It supports both high-side and low-side current sensing, making it versatile for various applications. The ModelGauge m5 EZ algorithm simplifies fuel gauge implementation by eliminating the need for battery characterization and reducing host software complexity. It provides robust tolerance against battery diversity and compensates for cell aging, temperature, and discharge rate, ensuring accurate state-of-charge (SOC) and remaining capacity estimates.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Current | 5.1 μA |
| Current Sensing | High-side or low-side sensing |
| Sense Resistor Range | 1 mΩ to 1000 mΩ |
| Temperature Measurement | Internal temperature sensor or external thermistor, ±1°C accuracy |
| Communication Interface | 2-wire I2C |
| Package Options | 0.4mm pitch, 1.5mm x 1.5mm, 9-pin WLP; 3mm x 3mm, 14-pin TDFN |
Key Features
- No characterization required for EZ performance
- Robust against battery variation
- Eliminates error near empty voltage and coulomb-counter drift
- Compensates for age, current, and temperature
- No calibration required
- Accurate current sensing with trace sensing and temperature compensation
- Supports Li+ and variants including LiFePO4
- Dynamic power estimates and power capability during discharge
- Time-to-empty and time-to-full estimation
- Predicts remaining capacity under theoretical load
- Alert indicators for voltage, SOC, temperature, current, and 1% SOC change
Applications
- Wearables, Smartwatches
- Tablets, 2-in-1 Laptops
- Bluetooth Headsets
- Health and Fitness Monitors
- Digital Still, Video, and Action Cameras
- Medical Devices
- Handheld Computers and Terminals
- Wireless Speakers
- Home and Building Automation, Sensors
- Portable Game Players
- Toys
Q & A
- What is the operating current of the MAX17260SETD+T?
The operating current is 5.1 μA. - Does the MAX17260SETD+T support high-side and low-side current sensing?
Yes, it supports both high-side and low-side current sensing. - What is the sense resistor range for the MAX17260SETD+T?
The sense resistor range is from 1 mΩ to 1000 mΩ. - How does the MAX17260SETD+T measure temperature?
It uses an internal temperature sensor or an external thermistor with ±1°C accuracy. - What communication interface does the MAX17260SETD+T use?
The MAX17260SETD+T uses a 2-wire I2C interface. - What package options are available for the MAX17260SETD+T?
It is available in 0.4mm pitch, 1.5mm x 1.5mm, 9-pin WLP and 3mm x 3mm, 14-pin TDFN packages. - Does the MAX17260SETD+T require battery characterization?
No, it does not require battery characterization due to the ModelGauge m5 EZ algorithm. - What types of batteries does the MAX17260SETD+T support?
It supports Li+ and variants including LiFePO4. - Can the MAX17260SETD+T estimate time-to-empty and time-to-full?
Yes, it can estimate time-to-empty and time-to-full. - Does the MAX17260SETD+T provide alert indicators?
Yes, it provides alert indicators for voltage, SOC, temperature, current, and 1% SOC change.
