MAX17262
PRODUCTION5.2µA 1-Cell Fuel Gauge with ModelGauge m5 EZ and Internal Current Sensing
Industry's Lowest IQ Fuel Gauge with Internal Rsense and ModelGauge m5 EZ Eliminates Battery Characterization
- Part Models
- 4
- 1ku List Price
- Starting From $1.50
Overview
- ModelGauge m5 EZ
- No Characterization Required for EZ Performance
- Robust Against Battery Variation
- Eliminates Error Near Empty Voltage
- Eliminates Coulomb Counter Drift
- Compensates for Age, Current, Temperature
- Does Not Require Empty, Full, or Idle States
- Low 5.2µA Operating Current
- Integrated Current Sensing Options
- 7mΩ and 30mΩ (typ)
- Supports Li+ and Variants Including LiFePO4
- Thermistor or ±1°C Internal Temperature
- Dynamic Power Estimates Power Capability During Discharge
- Time-to-Empty and Time-to-Full Estimation
- Constant Power or Constant Current
- Predicts Remaining Capacity Under Theoretical Load
- No Calibration Required
- Alert Indicator for Voltage, SOC, Temperature, Current, and 1% SOC Change
The MAX17262 is an ultra-low power fuel-gauge IC which implements the Maxim ModelGauge™ m5 algorithm. The IC monitors a single-cell battery pack and supports internal current sensing. The IC provides best performance for batteries with 30mAhr to 6Ahr capacity.
The ModelGauge m5 EZ makes fuel-gauge implementation easy by eliminating battery characterization requirements and simplifying host software interaction.The ModelGauge m5 EZ robust algorithm provides tolerance against battery diversity for most lithium batteries and applications.
The ModelGauge m5 EZ algorithm combines the short-term accuracy and linearity of a coulomb counter with the long-term stability of a voltage-based fuel gauge, along with temperature compensation to provide industry-leading fuel-gauge accuracy. The IC automatically compensates for cell-aging, temperature, and discharge rate, and provides accurate state-of-charge (SOC) in percentage (%) and remaining capacity in milliampere-hours (mAh) over a wide range of operating conditions. As the battery approaches the critical region near empty, the ModelGauge m5 algorithm invokes a special correction mechanism that eliminates any error. The IC provides accurate estimation of time-to-empty and time-to-full and provides three methods for reporting the age of the battery: reduction in capacity, increase in battery re- sistance, and cycle odometer.
The IC provides precision measurements of current, voltage, and temperature. The temperature of the battery pack is measured using an internal temperature sensor or external thermistor. A 2-wire I2C interface provides access to data and control registers. The IC is available in a tiny lead-free 0.4mm pitch, 1.5mm x 1.5mm, 9-pin wafer-level package (WLP).
APPLICATIONS
- Bluetooth Headset Cases
- Handheld Computers and Terminals
- Health and Fitness Monitors
- Home and Building Automation, Sensors
- Medical Devices
- Toys
- Wearables and Smartwatches
Documentation
Data Sheet 1
User Guide 3
Design Note 1
Technical Articles 2
Video 3
3rd Party Solutions 1
Analog Dialogue 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX17262HEWL+ | WLCSP | ||
| MAX17262HEWL+T | WLCSP | ||
| MAX17262REWL+ | Wafer-Level Package 3x3 Bump, Full Array | ||
| MAX17262REWL+T | Wafer-Level Package 3x3 Bump, Full Array |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Monitors & Fuel Gauges 1 | ||
| MAX17260 | PRODUCTION | 5.1µA 1-Cell Fuel Gauge with ModelGauge m5 EZ and Optional High-Side Current Sensing |
Tools & Simulations
Software Development 1
Evaluation Kits
Evaluation Kit for the MAX17262
Resources
Wireless Asset Health Monitoring with Edge AI
Resources
Wireless Asset Health Monitoring with Edge AI
Resources
Reference Designs
Analog Devices 1-Wire True Wireless Stereo (TWS) Cradle and Earbuds