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MAX17055: 7µA 1-Cell Fuel Gauge with ModelGauge m5 EZ Data Sheet (Rev. 0)3/28/2017PDF575K
MAX17055
7µA 1-Cell Fuel Gauge with ModelGauge m5 EZ
Industry's Lowest IQ Fuel Gauge with ModelGauge m5 EZ Eliminates Battery Characterization
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Overview
Features and Benefits
- ModelGauge m5 EZ
- No Characterization Required for EZ Performance
- Robust Against Battery Variation
- Eliminates Error Near Empty Voltage
- Eliminates Coulomb Counter Drift
- Current, Temperature, and Age Compensated
- Does Not Require Empty, Full, or Idle States
- Low 7µA Operating Current
- Wide Sense Resistor Range
- 1mΩ to 1000mΩ
- PCB Metal Sensing + Temperature Compensation
- Supports Li+ and Variants Including LiFePO4
- ±1°C Internal Temperature or Thermistor
- 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
- Precision Measurement System
- No Calibration Required
- Alert Indicator for Voltage, SOC, Temperature, Current, and 1% SOC Change
Product Details
The MAX17055 is a low 7μA operating current fuel gauge which implements Maxim ModelGauge™ m5 EZ algorithm. 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.
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 MAX17055 automatically compensates for cell aging, temperature, and discharge rate, and provides accurate state of charge (SOC in %) and remaining capacity in milliampere-hours (mAh). As the battery approaches the critical region near empty, the ModelGauge m5 algorithm invokes a special error correction mechanism that eliminates any error. It also provides three methods for reporting the age of the battery: reduction in capacity, increase in battery resistance, and cycle odometer.
The MAX17055 provides precision measurements of current, voltage, and temperature. Temperature of the battery pack is measured using an internal temperature measurement or external thermistor. A 2-wire I²C interface provides access to data and control registers.
The MAX17055 is available in a lead-free, tiny 0.4mm Pitch 1.4mm x 1.5mm, 9-pin WLP package, and a 2mm x 2.5mm, 10-pin TDFN package.
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Applications
- Bluetooth Headsets
- Digital Still, Video, and Action Cameras
- Handheld Computers and Terminals
- Health and Fitness Monitors
- Home and Building Automation, Sensors
- Medical Devices
- Portable Game Players
- Smartphones
- Tablets, 2-in-1 Laptops
- Toys
- Wearables, Smartwatches
- Wireless Speakers
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (3)
Documentation & Resources
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MAX17055 Reliability Data1/12/2023PDF128K
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UG-6365: MAX17055 Software Implementation Guide3/28/2017PDF178K
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UG-6358: MAX17055 User Guide3/28/2017PDF936K
Tools & Simulations
Software Development
Design Resources
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.
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.