Product details

Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells 2-4 Cells, >4 Cells Communication interface SMBus Battery capacity (Min) (mAh) 500 Battery capacity (Max) (mAh) 29000 Implementation Pack External capacity indication LED Features Cell Balancing, ECC authentication, Impedance Track™ algorithm, Integrated Protector, SHA-1 Authentication, Turbo Mode Operating temperature range (C) -40 to 85 Cell balancing External, Internal
Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells 2-4 Cells, >4 Cells Communication interface SMBus Battery capacity (Min) (mAh) 500 Battery capacity (Max) (mAh) 29000 Implementation Pack External capacity indication LED Features Cell Balancing, ECC authentication, Impedance Track™ algorithm, Integrated Protector, SHA-1 Authentication, Turbo Mode Operating temperature range (C) -40 to 85 Cell balancing External, Internal
VQFN (RSM) 32 16 mm² 4 x 4
  • Fully integrated 2-series to 6-series li-ion or li-polymer cell battery pack manager and protection
  • Next-generation patented Impedance Track Technology accurately measures available charge in li-ion and li-polymer batteries
  • Configurable multifunction pins to support a variety of applications
  • Supports either Elliptic Curve Cryptography (ECC) or SHA-1 authentication
  • High-side N-CH protection FET drive
  • Integrated cell balancing while charging or at rest
  • Supports 29-Ah batteries natively, and larger capacities with scaling
  • Full array of programmable protection features
    • Voltage
    • Current
    • Temperature
    • Charge timeout
    • CHG/DSG FETs
    • AFE
  • Sophisticated charge algorithms
    • JEITA
    • Enhanced charging
    • Adaptive charging
    • Cell balancing
  • Supports TURBO Mode 2.0/Intel Dynamic Battery Power Technology (DBPTv2)
  • Diagnostic Lifetime Data Monitor and Black Box Recorder
  • LED display
  • Supports two-wire SMBus v1.1 interface
  • IATA support
  • Compact package: 32-lead QFN (RSM)
  • Fully integrated 2-series to 6-series li-ion or li-polymer cell battery pack manager and protection
  • Next-generation patented Impedance Track Technology accurately measures available charge in li-ion and li-polymer batteries
  • Configurable multifunction pins to support a variety of applications
  • Supports either Elliptic Curve Cryptography (ECC) or SHA-1 authentication
  • High-side N-CH protection FET drive
  • Integrated cell balancing while charging or at rest
  • Supports 29-Ah batteries natively, and larger capacities with scaling
  • Full array of programmable protection features
    • Voltage
    • Current
    • Temperature
    • Charge timeout
    • CHG/DSG FETs
    • AFE
  • Sophisticated charge algorithms
    • JEITA
    • Enhanced charging
    • Adaptive charging
    • Cell balancing
  • Supports TURBO Mode 2.0/Intel Dynamic Battery Power Technology (DBPTv2)
  • Diagnostic Lifetime Data Monitor and Black Box Recorder
  • LED display
  • Supports two-wire SMBus v1.1 interface
  • IATA support
  • Compact package: 32-lead QFN (RSM)

The BQ40Z80 device, incorporating patented Impedance Track™ technology, is a fully integrated, single-chip, pack-based solution that provides a rich array of features for gas gauging, protection, and authentication for 2-series up to 6-series cell li-ion and li-polymer battery packs.

Using its integrated high-performance analog peripherals, the BQ40Z80 device measures and maintains an accurate record of available capacity, voltage, current, temperature, and other critical parameters in li-ion or li-polymer batteries, and reports this information to the system host controller over an SMBus v1.1 compatible interface.

Elliptic Curve Cryptography (ECC) or SHA-1 authentication with secure memory for authentication keys enables identification of genuine battery packs.

The BQ40Z80 device supports TURBO Mode 2.0/Intel Dynamic Battery Power Technology (DBPTv2) by providing the available max power and max current to the host system. The device has eight multifunction pins that can be configured as thermal inputs, ADC inputs, general purpose input/output (GPIO) pins, a presence pin, LED functions, display button input, or other functions. Status and flag registers are mappable to the GPIOs and used as interrupts to the host processor.

The BQ40Z80 device, incorporating patented Impedance Track™ technology, is a fully integrated, single-chip, pack-based solution that provides a rich array of features for gas gauging, protection, and authentication for 2-series up to 6-series cell li-ion and li-polymer battery packs.

Using its integrated high-performance analog peripherals, the BQ40Z80 device measures and maintains an accurate record of available capacity, voltage, current, temperature, and other critical parameters in li-ion or li-polymer batteries, and reports this information to the system host controller over an SMBus v1.1 compatible interface.

Elliptic Curve Cryptography (ECC) or SHA-1 authentication with secure memory for authentication keys enables identification of genuine battery packs.

The BQ40Z80 device supports TURBO Mode 2.0/Intel Dynamic Battery Power Technology (DBPTv2) by providing the available max power and max current to the host system. The device has eight multifunction pins that can be configured as thermal inputs, ADC inputs, general purpose input/output (GPIO) pins, a presence pin, LED functions, display button input, or other functions. Status and flag registers are mappable to the GPIOs and used as interrupts to the host processor.

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More information

Please use this device as a 2S to 6S battery pack manager.

Technical documentation

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Type Title Date
* Data sheet BQ40Z80 2-Series to 6-Series Li-Ion Battery Pack Manager datasheet (Rev. B) 14 Sep 2020
Application note Autonomous Smart Battery Guide 15 Oct 2021
User guide BQ40Z80 Technical Reference Manual (Rev. C) 16 Jun 2021
Technical article Searching for the newest innovations in power? Find them at APEC 09 Feb 2019
User guide bq40z80EVM Li-Ion Battery Pack Manager Rev B Board User's Guide 01 Nov 2018
User guide TI Fuel Gauge Authentication Key Packager and Programmer Tools 29 Jun 2018
Application note How to Complete a Successful Learning Cycle for the bq40z80 06 Jun 2018
Application note bq40z80 Manufacture, Production, and Calibration 06 Jun 2018
Application note Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) 05 Jun 2018
Application note Gauge Communication 12 Jan 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

BQ40Z80EVM-020 — BQ40Z80 2s-7s Battery Gauge Evaluation Module

The bq40z80 EVM includes one bq40z80, two bq771807 secondary protectors, and a link to Microsoft Windows based PC software, which can be used to monitor and predict capacity, perform cell balancing, monitor critical parameters, protect the cells from overcharge, over-discharge, short circuit, and (...)
In stock
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Application software & framework

BQSTUDIO — Battery Management Studio (bqStudio) Software

Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
Application software & framework

bq Key Packager EVM GUI

SLUC665.ZIP (135883 KB)
Firmware

bq Key Programmer EVM GUI

SLUC666.ZIP (140691 KB)
Software programming tool

BQKEYPROGRAMMER — Program Key Software for Battery Fuel Gauges

Several TI Fuel Gauge products support authentication for anti-counterfeit protection of battery packs. The selection of the battery authentication scheme between SHA and ECC is left to the user to decide. bqKeyPackager is provided to package the key, and bqKeyProgrammer is provided to program the (...)
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VQFN (RSM) 32 View options

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  • Qualification summary
  • Ongoing reliability monitoring

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