2-s to 6-s battery pack manager with Impedance Track™ gas gauging
Product details
Parameters
Package | Pins | Size
Features
- 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)
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Description
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.

More information
Please use this device as a 2S to 6S battery pack manager.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | BQ40Z80 2-Series to 6-Series Li-Ion Battery Pack Manager datasheet (Rev. B) | Sep. 14, 2020 |
* | User guide | BQ40Z80 Technical Reference Manual (Rev. B) | Nov. 04, 2019 |
Technical articles | Searching for the newest innovations in power? Find them at APEC | Feb. 08, 2019 | |
User guide | bq40z80EVM Li-Ion Battery Pack Manager Rev B Board User's Guide | Nov. 01, 2018 | |
User guide | TI Fuel Gauge Authentication Key Packager and Programmer Tools | Jun. 29, 2018 | |
Application note | How to Complete a Successful Learning Cycle for the bq40z80 | Jun. 06, 2018 | |
Application note | bq40z80 Manufacture, Production, and Calibration | Jun. 06, 2018 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- 2s-7s battery gauging with protection
- Supports internal and external cell balancing
- Multiple GPIOs and LED support
- Protection features include:
- Oover and under voltage
- Short circuit in charge and discharge
- Charge and pre-charge timeout
- Over and under temperaure
Software development
Features
- Real-time Gauge Dashboard for monitoring basic registers
- Full register access and logging
- Full data memory access and logging
- Product configuration and monitoring tools
- Import and export of product configurations
- Calibration and test automation
- Export of FS files for the target production environment
Features
- Supports multiple TI gauge devices that support authentication
- Supports SHA1, SHA256, and ECC key packaging depending on the device
- Keeps key hidden from packmaker for additional security in the manufacturing process
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN (RSM) | 32 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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