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1-Cell/2-Cell Fuel Gauge with ModelGauge

Maximize Battery Run Time with Industry's Smallest Size Fuel Gauges that Eliminate a Current-Sense Resistor

Product Details

The MAX17058/MAX17059 ICs are tiny fuel gauges for lithium-ion (Li+) batteries in handheld and portable equipment. The MAX17058 operates with a single Li+ cell and the MAX17059 with two Li+ cells in series.

The ICs use the sophisticated Li+ battery-modeling algorithm ModelGauge to track the battery relative state-of-charge (SOC) continuously over a widely varying charge/discharge conditions. The ModelGauge algorithm eliminates current-sense resistor and battery-learn cycles required by other fuel gauges. Temperature compensation is implemented using the system micro-controller.

On battery insertion, the ICs debounce initial voltage measurements to improve the initial SOC estimate, allowing them to be located on system side. SOC and voltage information is accessed using the I2C interface. The ICs are available in a tiny 0.9mm x 1.7mm, 8-bump wafer-level package (WLP) or a 2mm × 2mm, 8-pin TDFN package.

Key Features

  • MAX17058: 1 Cell, MAX17059: 2 Cells
  • Precision ±7.5mV/Cell Voltage Measurement
  • ModelGauge Algorithm
    • Provides Accurate State-of-Charge
    • Compensates for Temperature/Load Variation
    • Does Not Accumulate Errors, Unlike Coulomb Counters
    • Eliminates Learning
    • Eliminates Current-Sense Resistor
  • Low Quiescent Current: 23µA
  • Battery-Insertion Debounce
    • Best of 16 Samples Estimates Initial SOC
  • Programmable Reset for Battery Swap
    • 2.28V to 3.48V Range
  • Low SOC Alert Indicator
  • I2C Interface

Applications/Uses

  • Digital Still, Video, and Action Cameras
  • Handheld Computers and Terminals
  • Health and Fitness Monitors
  • Medical Devices
  • Smartphones, Tablets
  • Wireless Speakers
Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
Functions Fuel Gauge
Battery Type 1 Cell Li-Ion
Fuel Gauge Algorithm ModelGauge
Interface 2-Wire
Parameters Measured State of Charge
Voltage
Applications Host
VSUPPLY (V) (min) 2.5
VSUPPLY (V) (max) 4.5
Package/Pins TDFN/8
WLP/8
Oper. Temp. (°C) -40 to +85
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Simplified Block Diagram

 Tiny fuel gauges for lithium-ion (Li+) batteries in handheld and portable equipment | Simple Fuel-Gauge Circuit Diagram  Tiny fuel gauges for lithium-ion (Li+) batteries in handheld and portable equipment | Simple Fuel-Gauge Circuit Diagram Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Description

The MAX17058 and MAX17059 evaluation kits (EV kits) consist of the MAX17058 and MAX17059 evaluation kit (EV kit) and the Maxim DS91230+ command module. Windows XP®-, Windows Vista®-, and Windows® 7-compatible operating systems software is also available for use with the EV kits and can be downloaded from Maxim's website at www.maximintegrated.com/evkitsoftware.
The MAX17058 and MAX17059 EV kits are fully assembled and tested surface-mount PCBs that evaluate the MAX17058 and MAX17059 host- or battery-side fuel gauge for single/double-cell lithium-ion (Li+) batteries in handheld and portable equipment. The EV kits can be powered from a single battery (MAX17058) and can be configured to evaluate a single lithium cell (MAX17058) or two lithium cells in series (MAX17059).

View Details

Features

  • Battery Input Voltage Range
    • MAX17058: +2.5V to +4.5V
    • MAX17059: +2.5V to +12V
  • Powered from a Single Battery (MAX17058)
  • Evaluates Single-Cell (MAX17058) or 2-Cell (MAX17059) Batteries
  • Precision ±7.5mV Voltage Measurement per Cell
  • Current Sense Not Required
  • On-Board LDO for 2-Cell Evaluation (MAX17059)
  • Windows XP-, Windows Vista-, and Windows 7-Compatible Operating Systems Software
  • Proven PCB Layout
  • Fully Assembled and Tested

Description

The MAX17058 and MAX17059 evaluation kits (EV kits) consist of the MAX17058 and MAX17059 evaluation kit (EV kit) and the Maxim DS91230+ command module. Windows XP®-, Windows Vista®-, and Windows® 7-compatible operating systems software is also available for use with the EV kits and can be downloaded from Maxim's website at www.maximintegrated.com/evkitsoftware.
The MAX17058 and MAX17059 EV kits are fully assembled and tested surface-mount PCBs that evaluate the MAX17058 and MAX17059 host- or battery-side fuel gauge for single/double-cell lithium-ion (Li+) batteries in handheld and portable equipment. The EV kits can be powered from a single battery (MAX17058) and can be configured to evaluate a single lithium cell (MAX17058) or two lithium cells in series (MAX17059).

View Details

Features

  • Battery Input Voltage Range
    • MAX17058: +2.5V to +4.5V
    • MAX17059: +2.5V to +12V
  • Powered from a Single Battery (MAX17058)
  • Evaluates Single-Cell (MAX17058) or 2-Cell (MAX17059) Batteries
  • Precision ±7.5mV Voltage Measurement per Cell
  • Current Sense Not Required
  • On-Board LDO for 2-Cell Evaluation (MAX17059)
  • Windows XP-, Windows Vista-, and Windows 7-Compatible Operating Systems Software
  • Proven PCB Layout
  • Fully Assembled and Tested

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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
Battery Type 1 Cell Li-Ion
Fuel Gauge Algorithm ModelGauge
Interface 2-Wire
Parameters Measured State of Charge
Voltage
Applications Host
VSUPPLY (V) (min) 2.5
VSUPPLY (V) (max) 4.5
Package/Pins TDFN/8
WLP/8
Oper. Temp. (°C) -40 to +85

Key Features

  • MAX17058: 1 Cell, MAX17059: 2 Cells
  • Precision ±7.5mV/Cell Voltage Measurement
  • ModelGauge Algorithm
    • Provides Accurate State-of-Charge
    • Compensates for Temperature/Load Variation
    • Does Not Accumulate Errors, Unlike Coulomb Counters
    • Eliminates Learning
    • Eliminates Current-Sense Resistor
  • Low Quiescent Current: 23µA
  • Battery-Insertion Debounce
    • Best of 16 Samples Estimates Initial SOC
  • Programmable Reset for Battery Swap
    • 2.28V to 3.48V Range
  • Low SOC Alert Indicator
  • I2C Interface

Applications/Uses

  • Digital Still, Video, and Action Cameras
  • Handheld Computers and Terminals
  • Health and Fitness Monitors
  • Medical Devices
  • Smartphones, Tablets
  • Wireless Speakers

Description

The MAX17058/MAX17059 ICs are tiny fuel gauges for lithium-ion (Li+) batteries in handheld and portable equipment. The MAX17058 operates with a single Li+ cell and the MAX17059 with two Li+ cells in series.

The ICs use the sophisticated Li+ battery-modeling algorithm ModelGauge to track the battery relative state-of-charge (SOC) continuously over a widely varying charge/discharge conditions. The ModelGauge algorithm eliminates current-sense resistor and battery-learn cycles required by other fuel gauges. Temperature compensation is implemented using the system micro-controller.

On battery insertion, the ICs debounce initial voltage measurements to improve the initial SOC estimate, allowing them to be located on system side. SOC and voltage information is accessed using the I2C interface. The ICs are available in a tiny 0.9mm x 1.7mm, 8-bump wafer-level package (WLP) or a 2mm × 2mm, 8-pin TDFN package.

Simplified Block Diagram

 Tiny fuel gauges for lithium-ion (Li+) batteries in handheld and portable equipment | Simple Fuel-Gauge Circuit Diagram  Tiny fuel gauges for lithium-ion (Li+) batteries in handheld and portable equipment | Simple Fuel-Gauge Circuit Diagram Zoom icon

Technical Docs

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