MAX17312

1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

Industry's Lowest IQ Stand-Alone Fuel Gauge with Protector


Please check latest availability status for a specific part variant.

Description

The MAX17301–MAX17303/MAX17311–MAX17313 is a 24μA IQ stand-alone pack-side fuel gauge IC with protector and optional SHA-256 authentication for 1-cell lithium-ion/polymer batteries.

The IC monitors the voltage, current, temperature, and state of the battery to provide against over/undervoltage, overcurrent, short-circuit, over/undertemperature and overcharge conditions protection using external high-side N-FETs, and provides charging prescription to ensure that the lithium-ion/polymer battery operates under safe conditions prolonging the life of the battery.

To prevent battery pack cloning, the IC integrates SHA-256 authentication with a 160-bit secret key. Each IC incorporates a unique 64-bit ID.

The fuel gauge uses ModelGauge m5 algorithm that combines the short-term accuracy and linearity of a coulomb counter with the long-term stability of a voltage-based fuel gauge to provide industry-leading fuel-gauge accuracy.

The IC automatically compensates for cell aging, temperature, and discharge rate, and provides accurate state-of-charge (SOC) in milliampere-hours (mAh) or percentage (%) over a wide range of operating conditions.

Dynamic power functionality provides the instantaneous maximum battery output power which can be delivered to the system without violating the minimum system input voltage.

A Maxim 1-Wire® or 2-wire I2C interface provides access to data and control registers. The IC is available in a lead-free, 3mm x 3mm 14-pin TDFN and 1.7mm x 2.5mm 15-bump 0.5mm pitch WLP packages.

MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313: Functional Diagram MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313: Functional Diagram Enlarge+

Key Features

  • Battery Health + Programmable Safety/Protection
    • Overvoltage (Temperature Dependent)
    • Overcharge Current 
    • Over/Undertemperature
    • Ideal Diode Discharge During Charge Fault
    • Charging Prescriptions (JEITA)
    • Zero-Volt Charging Option
    • Undervoltage + SmartEmpty
    • Overdischarge/Short-Circuit 
  • Nonvolatile Memory for Stand-Alone Operation
    • ​History Logging, User Data (122 Bytes)
  • Low Quiescent Current
    • FETs Enabled: 24µA Active, 18µA Hibernate
    • FETs Disabled: 7µA Ship, 0.5µA DeepShip, 0.1µA UV-Shutdown
  • Pushbutton Wakeup—Eliminates System Consumption Until Button Press
  • ModelGauge m5 EZ Algorithm
    • Percent, Capacity,Time-to-Empty/Full, Age
    • Cycle+™ Age Forecast
  • Dynamic Power—Estimates Power Capability
  • Precision Measurement Without Calibration
    • ​Current, Voltage, Power, Time, Cycles
    • Die Temperature​/Thermistor

Applications/Uses

  • Smartphones, Tablets, and 2-in-1 Laptops
  • Smartwatches and Wearables
  • Medical Devices, Health and Fitness Monitors
  • Digital Still, Video, and Action Cameras
  • Handheld Computers and Terminals
  • Handheld Radios
  • Home and Building Automation, Sensors
  • Smart Batteries

MAX17301GEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17301XEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17311GEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17311XEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17302GEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17302XEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17312GEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17312XEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17303GEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17303XEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17313GEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
MAX17313XEVKIT: Evaluation Kit for the MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

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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Related Resources


MAX17312
1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

  • Battery Health + Programmable Safety/Protection
  • Nonvolatile Memory for Stand-Alone Operation
  • Low Quiescent Current

MAX17311
1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

  • Battery Health + Programmable Safety/Protection
  • Nonvolatile Memory for Stand-Alone Operation
  • Low Quiescent Current

MAX17303
1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

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  • Nonvolatile Memory for Stand-Alone Operation
  • Low Quiescent Current

MAX17313
1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

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MAX17301
1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

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  • Nonvolatile Memory for Stand-Alone Operation
  • Low Quiescent Current

MAX17302
1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

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  • Nonvolatile Memory for Stand-Alone Operation
  • Low Quiescent Current

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