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7µA 1-Cell Fuel Gauge with ModelGauge m5 EZ

Industry's Lowest IQ Fuel Gauge with ModelGauge m5 EZ Eliminates Battery Characterization

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.

Design Solution: DS39-Choose the Right Battery Fuel Gauge for Fast Time-to-Market and Maximum Run-Time ›


Watch video ›



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
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
Applications 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)
$1.16 @1k
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Simplified Block Diagram

MAX17055: Functional Diagram MAX17055: Functional Diagram Zoom icon

Design & Development

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Description

The MAX17055G/MAX17055X evaluation kits (EV kits) are fully assembled and tested surface-mount PCBs that evaluate the stand-alone ModelGauge™ m5 host-side fuel gauge ICs for lithium-ion (Li+) batteries in handheld and portable equipment.

The MAX17055G/MAX17055X EV kits include the Maxim DS91230+ USB interface, IC evaluation board, and RJ-11 connection cable. Windows® based graphical user interface (GUI) software is available for use with the EV kit and can be downloaded from Maxim’s website www.maximintegrated.com/evkitsoftware. Windows 7 or newer Windows operating system is required to use the EV kit GUI software.

Watch video ›

View Details

Features

  • ModelGauge m5 Algorithm
  • Monitors 1-Cell Lithium-Ion Battery Packs
  • Battery Pack Input Voltage Range of +2.3V to +4.9V
  • On-chip Temperature Measurement and External Thermistor Measurement Network
  • Optional On-Board PCB Trace Sense Resistor
  • Windows 7 or Newer Compatible Software
  • Proven PCB Layout
  • Fully Assembled and Tested

Description

The MAX17055G/MAX17055X evaluation kits (EV kits) are fully assembled and tested surface-mount PCBs that evaluate the stand-alone ModelGauge™ m5 host-side fuel gauge ICs for lithium-ion (Li+) batteries in handheld and portable equipment.

The MAX17055G/MAX17055X EV kits include the Maxim DS91230+ USB interface, IC evaluation board, and RJ-11 connection cable. Windows® based graphical user interface (GUI) software is available for use with the EV kit and can be downloaded from Maxim’s website www.maximintegrated.com/evkitsoftware. Windows 7 or newer Windows operating system is required to use the EV kit GUI software.

Watch video ›

View Details

Features

  • ModelGauge m5 Algorithm
  • Monitors 1-Cell Lithium-Ion Battery Packs
  • Battery Pack Input Voltage Range of +2.3V to +4.9V
  • On-chip Temperature Measurement and External Thermistor Measurement Network
  • Optional On-Board PCB Trace Sense Resistor
  • Windows 7 or Newer Compatible Software
  • Proven PCB Layout
  • Fully Assembled and Tested

Description

The MAX32620FTHR board is a rapid development platform designed to help engineers quickly implement battery-optimized solutions with the MAX32620 Arm® Cortex®-M4 microcontroller with FPU. The board also includes the MAX77650 ultra-low power PMIC and MAX17055 fuel gauge to provide efficient power conversion and battery management with minimal board space. The form factor is a small 0.9in x 2.0in dual-row header footprint that is compatible with breadboards and off-theshelf peripheral expansion boards. In addition to the dualrow headers, there are also two 12-pin Pmod™-compatible socket connectors for more expansion options. Also on board are common user-interface peripherals including two RGB indicator LEDs and two pushbuttons. These provide a power-optimized flexible platform for quick proofs-of-concept and early software development to enhance time to market.


Introducing the MAX32620FTHR Prototyping Platform




How to Program the MAX7360 Key Switch Controller using the Arduino IDE

View Details

Features

  • Convenient Development Platform
    • 0.9in x 2.0in DIP Form Factor
      • Breadboard Compatible
      • Feather Wing Compatible
    • Pmod-Compatible Sockets
      • Supports SPI, UART, I2C, and GPIO
      • Accessible from Both Sides of Board
    • Integrated Battery Management
      • Single-Cell Li+ Charger
      • Fuel Gauge
    • User Interface Peripherals
      • Two RGB LEDs
      • Two Pushbuttons
  • MAX32620 Microcontroller Features
    • 96MHz Arm Cortex-M4 Microcontroller with FPU
    • 2048KB Flash
    • 256KB SRAM
    • Full-Speed USB
    • SPI, I2C, UART, and 1-Wire
    • 4-Channel 10-Bit ADC
    • 49 Dual Voltage GPIO
    • 3.9mm x 4.1mm, 81-Bump WLP
  • MAX77650 Ultra-Low Power PMIC Features
    • Smart Power Selector Charger
      • Supports Li+/Li-Poly Batteries
      • 7.5mA to 300mA Charge Current
    • Single Inductor Multiple Output (SIMO) Buck-Boost Regulator
      • 3 Outputs from a Single Inductor
    • 150mA LDO Regulator
    • I2C Configurable
    • 2.75mm x 2.15mm, 30-Bump WLP
  • MAX17055 Fuel Gauge Features
    • ModelGauge m5 EZ
      • Eliminates Battery Characterization
      • Eliminates Coulomb Counter Drift
    • 7µA Operating Current
    • 1.4mm x 1.5mm, 9-Bump WLP

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Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal

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
Applications 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)
$1.16 @1k

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.

Design Solution: DS39-Choose the Right Battery Fuel Gauge for Fast Time-to-Market and Maximum Run-Time ›


Watch video ›



Simplified Block Diagram

MAX17055: Functional Diagram MAX17055: Functional Diagram Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal