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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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Key Features
Applications/Uses
Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
| Functions | Fuel Gauge Status Monitor |
| Battery Type | 1 Cell Li-Ion |
| Fuel Gauge Algorithm | ModelGauge m5 |
| Interface | 2-Wire |
| Parameters Measured | Current State of Charge Temperature Time Voltage |
| End Equipment | Host Pack |
| VSUPPLY (V) (min) | 2.3 |
| VSUPPLY (V) (max) | 4.9 |
| Package/Pins | TDFN/10 WLP/9 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | 1.23 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | 7µA 1-Cell Fuel Gauge with ModelGauge m5 EZ | Mar 28, 2017 | |
| App Note | Considerations for Fuel Gauging Lithium-Iron-Phosphate Batteries | ||
| App Note | How to Fuel Gauge Lithium-Ion Batteries Without Battery Characterization with ModelGauge m5 EZ | ||
| User Guide | MAX17055 Software Implementation Guide | ||
| User Guide | MAX17055 User Guide | ||
| Design Solution | Choose the Right Battery Fuel Gauge for Fast Time-to-Market and Maximum Run-Time |
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Design Solution: Choose the Right Battery Fuel Gauge for Fast Time-to-Market and Maximum Run-Time ›
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Parameters
Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
| Functions | Fuel Gauge Status Monitor |
| Battery Type | 1 Cell Li-Ion |
| Fuel Gauge Algorithm | ModelGauge m5 |
| Interface | 2-Wire |
| Parameters Measured | Current State of Charge Temperature Time Voltage |
| End Equipment | Host Pack |
| VSUPPLY (V) (min) | 2.3 |
| VSUPPLY (V) (max) | 4.9 |
| Package/Pins | TDFN/10 WLP/9 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | 1.23 |
Key Features
- 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
Applications/Uses
- 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
Description
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.
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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Technical Docs
| Data Sheet | 7µA 1-Cell Fuel Gauge with ModelGauge m5 EZ | Mar 28, 2017 | |
| App Note | Considerations for Fuel Gauging Lithium-Iron-Phosphate Batteries | ||
| App Note | How to Fuel Gauge Lithium-Ion Batteries Without Battery Characterization with ModelGauge m5 EZ | ||
| User Guide | MAX17055 Software Implementation Guide | ||
| User Guide | MAX17055 User Guide | ||
| Design Solution | Choose the Right Battery Fuel Gauge for Fast Time-to-Market and Maximum Run-Time |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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