MAX17320
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MAX17320

2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and SHA-256 Authentication

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Industry's Lowest IQ Stand-Alone Multi-Cell Fuel Gauge with Protector and SHA-256 Authentication

Info : RECOMMENDED FOR NEW DESIGNS tooltip
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Part Models 16
1ku List Price Starting From $1.93
Features
  • Battery Health + Programmable Safety/Protection
    • Overvoltage (Temperature Dependent)
    • Overcharge/Overdischarge/Short-Circuit Current
    • Over/Undertemperature
    • Undervoltage + SmartEmpty
    • Battery Internal Self-Discharge Detection
    • Ideal Diode Discharge During Charge Fault
    • Charging Prescriptions (JEITA)
    • Prequal Charge Control with CHG FET
  • ModelGauge m5 EZ Algorithm
    • Percent, Capacity, Time-to-Empty/Full, Age
    • Cycle+™ Age Forecast
  • Precision Measurement Without Calibration
    • Current, Voltage, Power, Time, Cycles
    • Die Temperature, 4 Thermistors ±1°C
  • Cell Balancing with Internal FETs
  • SHA-256 Authentication
  • Nonvolatile Memory for Stand-Alone Operation
    • History Logging, User Data (84 Bytes)
  • Low Quiescent Current
    • FETs Enabled: 38µA Active
  • Pushbutton Wakeup—Eliminates System Consumption Until Button Press
  • Always-On LDO
  • Dynamic Power—Estimates Power Capability
  • SBS 1.1 Compatible Register Set
Additional Details
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The MAX17320 is a 38µA IQ stand-alone pack-side fuel gauge IC with protector, battery internal self-discharge detection, and optional SHA-256 authentication for 2 to 4 series lithium-ion/polymer batteries.

The IC monitors the voltage, current, temperature and state of the battery to provide protection against over/undervoltage, overcurrent, short-circuit, over/undertemperature, overcharge, and internal self-discharge conditions using external high-side N-FETs, and provides charging prescription to ensure that the battery operates under safe conditions, thereby prolonging the life of the battery. The IC balances the cells using internal FETs. During prequal charging, the IC uses the CHGFET to linearly control charging.

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 Maxim 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.

The IC provides a configurable always-on LDO that can power small critical loads on the system side without overloading the cells even under fault 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/SMBus interface provides access to data and control registers. The IC is available in a lead-free, 2.4mm x 2.6mm 30-bump 0.4mm pitch WLP and 4mm x 4mm 24-pin TQFN packages.

Applications

  • Digital Still, Video, and Action Cameras
  • Handheld Computers, Radios, and Terminals
  • Medical Devices, Health and Fitness Monitors
  • Power Tools, Wireless Speakers, and Drones
  • Smart Batteries and Battery Backup
  • Smartphones, Tablets, and 2-in-1 Laptops
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file View Data Sheet (Rev.9)
Documentation View All Documentation
Part Models 16
1ku List Price Starting From $1.93
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MAX17320

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UPDATED 10/16/2023
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MAX17320: 2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and SHA-256 Authentication Data Sheet (Rev.9)

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User Guide

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UPDATED 08/20/2021
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MAXREFDES183# Portable Precision Calibrator Quick Start Guide redirect icon

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UPDATED 04/21/2020
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UG-7161: MAX17320 Software Implementation Guide redirect icon

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UG-7177: MAX17320 Battery Pack Implementation Guide redirect icon

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Documentation

Documentation

Book & eBook 1

Power You Can Trust: Achieving Efficient Battery-Powered Solutions

Webcast 2

Logistics Automation: Automatic Data Capture Solutions Enabling Safer, Secure, & Sustainable Solutions
How ADI is keeping up with security threats in retail, logistics and banking point of sale (POS) systems

Analog Dialogue 1

Software-Configurable Analog I/O Heralds More Compact and Convenient Calibrators

Video

4

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Video

2022-10-04

10:13

Fast Charging with USB Power Delivery

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Video

2023-02-08

03:17

Don't Let a Low Battery Eat Into Your Playtime

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Video

2022-10-04

12:18

Introduction to the MAX17320 2-4 Cell ModelGauge m5 EZ Fuel Gauge with 2-Level Protector and SHA-256 Authentication

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Video

2022-10-04

32:15

Better Battery Safety and User Experience with Accurate Fuel Gauges

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX17320G10+ 24-TQFN-4X4X0.75 external-link
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  • Material Declaration external-link
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MAX17320G10+T 24-TQFN-4X4X0.75 external-link
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MAX17320G12+ 24-TQFN-4X4X0.75 external-link
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  • Material Declaration external-link
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MAX17320G12+T 24-TQFN-4X4X0.75 external-link
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  • Material Declaration external-link
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MAX17320G20+ 24-TQFN-4X4X0.75 external-link
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MAX17320G20+T 24-TQFN-4X4X0.75 external-link
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MAX17320G22+ 24-TQFN-4X4X0.75 external-link
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  • Reliablity Data external-link
MAX17320G22+T 24-TQFN-4X4X0.75 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX17320X10+ 30-WLCSP-N/A external-link
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  • Material Declaration external-link
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MAX17320X10+T 30-WLCSP-N/A external-link
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MAX17320X12+ 30-WLCSP-N/A external-link
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  • Material Declaration external-link
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MAX17320X12+T 30-WLCSP-N/A external-link
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  • Material Declaration external-link
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MAX17320X20+ 30-WLCSP-N/A external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX17320X20+T 30-WLCSP-N/A external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX17320X22+ 30-WLCSP-N/A external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX17320X22+T 30-WLCSP-N/A external-link
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  • Material Declaration external-link
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 4

MAX17320X2EVKIT

Evaluation Kit for the MAX17320

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MAX17320X2EVKIT

Evaluation Kit for the MAX17320

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Download

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MAX17320X2EVKIT
Evaluation Kit for the MAX17320

Features and Benefits

  • ModelGauge m5 Algorithm
  • Monitors Multicell Packs
  • Full Protection Solution On-Board for Evaluation
  • Battery Pack Input Voltage Range of +2.3V to +4.9V/Cell with Default Hardware
  • Default Current Range -10A to +10A with 5mΩ Sense Resistor, Higher Currents Can Be Supported by Changing to a Smaller Sense Resistor
  • Thermistor Measurement
  • On-Board I2C/1-Wire Communication Interface with Built-In MAXUSB Interface
  • Windows 7 or Newer Compatible Software
  • Proven PCB Layout
  • Fully Assembled and Tested
Buy Now View Details

Product Detail

The MAX17320X/MAX17320G evaluation kits (EV kits) are fully assembled and tested surface-mount PCBs that evaluate the stand-alone pack-side fuel gauge IC with protector and optional SHA-256 authentication for 2-4 cell lithium-ion/polymer batteries.

The MAX17320 EV kits include the IC evaluation board with integrated I2C/1-Wire® interface and USB micro-B cable. Windows® based graphical user interface (GUI) software is available for use with the EV kit and can be downloaded from https:// www.maximintegrated.com/products/MAX17320.html/ product page under “Design Resources” tab. Windows 7 or newer Windows operating system is required to use with the EV kit GUI software.

Applications

  • Digital Still, Video, and Action Cameras
  • Handheld Computers, Radios, and Terminals
  • Medical Devices, Health and Fitness Monitors
  • Power Tools, Wireless Speakers, and Drones
  • Smart Batteries and Battery Backup
  • Smartphones, Tablets, and 2-in-1 Laptops

Resources

pdf icon

ZIP

MAX17320X ODB Files - Design Files Download

1.13 M

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MAX17320X1EVKIT

Evaluation Kit for the MAX17320

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MAX17320X1EVKIT

Evaluation Kit for the MAX17320

download icon

Download

 print icon

Print
MAX17320X1EVKIT
Evaluation Kit for the MAX17320

Features and Benefits

  • ModelGauge m5 Algorithm
  • Monitors Multicell Packs
  • Full Protection Solution On-Board for Evaluation
  • Battery Pack Input Voltage Range of +2.3V to +4.9V/Cell with Default Hardware
  • Default Current Range -10A to +10A with 5mΩ Sense Resistor, Higher Currents Can Be Supported by Changing to a Smaller Sense Resistor
  • Thermistor Measurement
  • On-Board I2C/1-Wire Communication Interface with Built-In MAXUSB Interface
  • Windows 7 or Newer Compatible Software
  • Proven PCB Layout
  • Fully Assembled and Tested
Buy Now View Details

Product Detail

The MAX17320X/MAX17320G evaluation kits (EV kits) are fully assembled and tested surface-mount PCBs that evaluate the stand-alone pack-side fuel gauge IC with protector and optional SHA-256 authentication for 2-4 cell lithium-ion/polymer batteries.

The MAX17320 EV kits include the IC evaluation board with integrated I2C/1-Wire® interface and USB micro-B cable. Windows® based graphical user interface (GUI) software is available for use with the EV kit and can be downloaded from https:// www.maximintegrated.com/products/MAX17320.html/ product page under “Design Resources” tab. Windows 7 or newer Windows operating system is required to use with the EV kit GUI software.

Applications

  • Digital Still, Video, and Action Cameras
  • Handheld Computers, Radios, and Terminals
  • Medical Devices, Health and Fitness Monitors
  • Power Tools, Wireless Speakers, and Drones
  • Smart Batteries and Battery Backup
  • Smartphones, Tablets, and 2-in-1 Laptops

Resources

pdf icon

ZIP

MAX17320X ODB Files - Design Files Download

1.13 M

Show More Arrow image

MAX17320G2EVKIT

Evaluation Kit for the MAX17320

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MAX17320G2EVKIT

Evaluation Kit for the MAX17320

download icon

Download

 print icon

Print
MAX17320G2EVKIT
Evaluation Kit for the MAX17320

Features and Benefits

  • ModelGauge m5 Algorithm
  • Monitors Multicell Packs
  • Full Protection Solution On-Board for Evaluation
  • Battery Pack Input Voltage Range of +2.3V to +4.9V/Cell with Default Hardware
  • Default Current Range -10A to +10A with 5mΩ Sense Resistor, Higher Currents Can Be Supported by Changing to a Smaller Sense Resistor
  • Thermistor Measurement
  • On-Board I2C/1-Wire Communication Interface with Built-In MAXUSB Interface
  • Windows 7 or Newer Compatible Software
  • Proven PCB Layout
  • Fully Assembled and Tested
Buy Now View Details

Product Detail

The MAX17320X/MAX17320G evaluation kits (EV kits) are fully assembled and tested surface-mount PCBs that evaluate the stand-alone pack-side fuel gauge IC with protector and optional SHA-256 authentication for 2-4 cell lithium-ion/polymer batteries.

The MAX17320 EV kits include the IC evaluation board with integrated I2C/1-Wire® interface and USB micro-B cable. Windows® based graphical user interface (GUI) software is available for use with the EV kit and can be downloaded from https:// www.maximintegrated.com/products/MAX17320.html/ product page under “Design Resources” tab. Windows 7 or newer Windows operating system is required to use with the EV kit GUI software.

Applications

  • Digital Still, Video, and Action Cameras
  • Handheld Computers, Radios, and Terminals
  • Medical Devices, Health and Fitness Monitors
  • Power Tools, Wireless Speakers, and Drones
  • Smart Batteries and Battery Backup
  • Smartphones, Tablets, and 2-in-1 Laptops

Resources

pdf icon

ZIP

MAX17320G2EVKIT ODB Files - Design Files Download

1.08 M

Show More Arrow image

MAX17320G1EVKIT

Evaluation Kit for the MAX17320

zoom

MAX17320G1EVKIT

Evaluation Kit for the MAX17320

download icon

Download

 print icon

Print
MAX17320G1EVKIT
Evaluation Kit for the MAX17320

Features and Benefits

  • ModelGauge m5 Algorithm
  • Monitors Multicell Packs
  • Full Protection Solution On-Board for Evaluation
  • Battery Pack Input Voltage Range of +2.3V to +4.9V/Cell with Default Hardware
  • Default Current Range -10A to +10A with 5mΩ Sense Resistor, Higher Currents Can Be Supported by Changing to a Smaller Sense Resistor
  • Thermistor Measurement
  • On-Board I2C/1-Wire Communication Interface with Built-In MAXUSB Interface
  • Windows 7 or Newer Compatible Software
  • Proven PCB Layout
  • Fully Assembled and Tested
Buy Now View Details

Product Detail

The MAX17320X/MAX17320G evaluation kits (EV kits) are fully assembled and tested surface-mount PCBs that evaluate the stand-alone pack-side fuel gauge IC with protector and optional SHA-256 authentication for 2-4 cell lithium-ion/polymer batteries.

The MAX17320 EV kits include the IC evaluation board with integrated I2C/1-Wire® interface and USB micro-B cable. Windows® based graphical user interface (GUI) software is available for use with the EV kit and can be downloaded from https:// www.maximintegrated.com/products/MAX17320.html/ product page under “Design Resources” tab. Windows 7 or newer Windows operating system is required to use with the EV kit GUI software.

Applications

  • Digital Still, Video, and Action Cameras
  • Handheld Computers, Radios, and Terminals
  • Medical Devices, Health and Fitness Monitors
  • Power Tools, Wireless Speakers, and Drones
  • Smart Batteries and Battery Backup
  • Smartphones, Tablets, and 2-in-1 Laptops

Resources

pdf icon

ZIP

MAX17320G1EVKIT ODB Files - Design Files Download

1.08 M

Show More Arrow image

Evaluation Kits4

MAX17320X2EVKIT

Evaluation Kit for the MAX17320
evaluation kit item images

MAX17320X1EVKIT

Evaluation Kit for the MAX17320

MAX17320G2EVKIT

Evaluation Kit for the MAX17320

MAX17320G1EVKIT

Evaluation Kit for the MAX17320
Reference Designs

Reference Designs 4

maxrefdes1209 figure 1

MAXREFDES1209

Non-Isolated 12V/0.5A 6W Step-Down Converter Using the MAX17501

maxrefdes1299 figure 1

MAXREFDES1299

4-Cell Fuel Gauge with External Cell Balancing using MAX17320

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MAXREFDES1299

4-Cell Fuel Gauge with External Cell Balancing using MAX17320

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Print
MAXREFDES1299
4-Cell Fuel Gauge with External Cell Balancing using MAX17320

Features and Benefits

  • Monitors cell voltages, pack current, pack temperatures, balances cells, and protects by controlling charge or discharge field-effect transistors (FETs).
  • Hardware protection for overcurrent in charge/discharge, short circuit in discharge, overvoltage, undervoltage, over temperature and under temperature.
  • External cell balancing up to 600 mA per cell.
  • I2C Interface with clock frequency of 400kHz.
View Detailed Reference Design external link

Part Used 1

MAX17320 reference design link

Design & Integration Tools

pdf icon

ZIP

Download Design Files link icon

1.9 M

MAXREFDES183 System Block Diagram

MAXREFDES183

MAXREFDES183# Portable Precision Calibrator

MAXREFDES179 Block Diagram

MAXREFDES179

Multicell USB-C PD Charging with Fuel Gauge Platform

zoomopens a dialog

MAXREFDES179

Multicell USB-C PD Charging with Fuel Gauge Platform

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Download

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Print
MAXREFDES179
Multicell USB-C PD Charging with Fuel Gauge Platform

Features and Benefits

  • Input operating range of 3.5V to 25V
  • Type-C and USB-PD support

    • DRP and Try,Snk state
    • Cable orientation, power role detection
    • Integrated VCONN switch with OCP

  • Autonegotiate for the highest PD power profile (45W) when Sink
  • Autoenable OTG when Source
  • Autoconfigurable battery charger
  • AP control to overwrite PD power profile, OTG limit, USB-PD functions, buck-boost charger configuration, read/write MAX17320 fuel gauge status, configure MAX77932 switched capacitor converter
View Detailed Reference Design external link

Part Used 5

MAX77932C reference design link

MAX77958 reference design link

MAX77960 reference design link

MAX77961 reference design link

MAX17320 reference design link

Design & Integration Tools

pdf icon

ZIP

Download Design Files link icon

24.22 M

Videos

Thumbnail Image

2023-02-08

03:17

Don't Let a Low Battery Eat Into Your Playtime

Reference Designs4

maxrefdes1209 figure 1

MAXREFDES1209

Non-Isolated 12V/0.5A 6W Step-Down Converter Using the MAX17501

maxrefdes1299 figure 1

MAXREFDES1299

4-Cell Fuel Gauge with External Cell Balancing using MAX17320

MAXREFDES183 System Block Diagram

MAXREFDES183

MAXREFDES183# Portable Precision Calibrator

MAXREFDES179 Block Diagram

MAXREFDES179

Multicell USB-C PD Charging with Fuel Gauge Platform

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