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

Please check latest availability status for a specific part variant.


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.

 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 Enlarge+

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


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

See parametric specs for Battery Fuel Gauges, Protectors, and Monitors (52)

Part NumberFunctionsBattery TypeInterfaceFuel Gauge Algorithm
MAX17058 Fuel Gauge1 Cell Li-Ion2-WireModelGauge
MAX17059 2 Cell Li-Ion

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX17058EVKIT: Evaluation Kits for the MAX17058 and MAX17059
MAX17059EVKIT: Evaluation Kits for the MAX17058 and MAX17059
Product Reliability Reports: MAX17058.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Environmental Management System >


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