Product details

Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (min) (mAh) 100 Battery capacity (max) (mAh) 65000 Implementation Pack External capacity indication LED Features Cell balancing, Dynamic Z-Track™ technology, ECC authentication, Integrated Protector, SHA-256 Authentication, Turbo Mode Operating temperature range (°C) -40 to 85 Cell balancing External, Internal Rating Catalog
Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (min) (mAh) 100 Battery capacity (max) (mAh) 65000 Implementation Pack External capacity indication LED Features Cell balancing, Dynamic Z-Track™ technology, ECC authentication, Integrated Protector, SHA-256 Authentication, Turbo Mode Operating temperature range (°C) -40 to 85 Cell balancing External, Internal Rating Catalog
WQFN (RSN) 32 16 mm² 4 x 4
  • Fully integrated 2-series, 3-series, and 4-series cell Li-ion, LiPO, or LiFePO4 battery pack manager and protection
  • Ultra-low power 32-bit RISC processor
  • TI Dynamic Z-Track™ algorithm
  • Up to 40V tolerant power supply pins
  • High side N-CH protection FET drive with configurable drive strength
  • Precision analog front-end with two independent 16-bit ADCs:
    • Support for simultaneous current and voltage sampling
    • Support for up to four external thermistor measurements and an internal temperature sensor
  • Primary and secondary levels of protection
    • Overvoltage and undervoltage
    • Overcurrent in charge and discharge
    • Short circuit in discharge
    • Overtemperature
    • Charge timeout
    • CHG and DSG FET drivers
  • Sophisticated charge algorithms
    • JEITA
    • Adaptive charging based on cycle time, run time, and SOH
    • Cell balancing
  • Integrated cell balancing while charging or at rest
  • Supports TURBO mode
  • Diagnostic lifetime data monitor and black box recorder
  • Optional up to three LED display support
  • Supports SHA-1, SHA-2, and Elliptic Curve Cryptography (ECC) authentication
  • Up to 1MHz SMBus v3.2 host communication support
  • Compact package: 32-lead WQFN (RSN)
  • Fully integrated 2-series, 3-series, and 4-series cell Li-ion, LiPO, or LiFePO4 battery pack manager and protection
  • Ultra-low power 32-bit RISC processor
  • TI Dynamic Z-Track™ algorithm
  • Up to 40V tolerant power supply pins
  • High side N-CH protection FET drive with configurable drive strength
  • Precision analog front-end with two independent 16-bit ADCs:
    • Support for simultaneous current and voltage sampling
    • Support for up to four external thermistor measurements and an internal temperature sensor
  • Primary and secondary levels of protection
    • Overvoltage and undervoltage
    • Overcurrent in charge and discharge
    • Short circuit in discharge
    • Overtemperature
    • Charge timeout
    • CHG and DSG FET drivers
  • Sophisticated charge algorithms
    • JEITA
    • Adaptive charging based on cycle time, run time, and SOH
    • Cell balancing
  • Integrated cell balancing while charging or at rest
  • Supports TURBO mode
  • Diagnostic lifetime data monitor and black box recorder
  • Optional up to three LED display support
  • Supports SHA-1, SHA-2, and Elliptic Curve Cryptography (ECC) authentication
  • Up to 1MHz SMBus v3.2 host communication support
  • Compact package: 32-lead WQFN (RSN)

The BQ41Z50 device, incorporating Dynamic Z-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, 3-series, and 4-series cell Li-ion, LiPO, and LiFePO4 battery packs.

Using its integrated high-performance analog peripherals and ultra-low power 32-bit RISC processor, the BQ41Z50 device measures and maintains an accurate record of available cell capacity, voltage, current, temperature, and other critical battery parameters and reports them to the system host controller over an SMBus v3.2 compatible interface.

The BQ41Z50 device, incorporating Dynamic Z-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, 3-series, and 4-series cell Li-ion, LiPO, and LiFePO4 battery packs.

Using its integrated high-performance analog peripherals and ultra-low power 32-bit RISC processor, the BQ41Z50 device measures and maintains an accurate record of available cell capacity, voltage, current, temperature, and other critical battery parameters and reports them to the system host controller over an SMBus v3.2 compatible interface.

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Technical documentation

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Type Title Date
* Data sheet BQ41Z50 2-Series, 3-Series, and 4-Series Cell Li-Ion Battery Pack Manager with Dynamic Z-Track datasheet PDF | HTML 19 Jun 2024
Application note BQ41xxx Production Calibration Guide PDF | HTML 01 Jul 2024
User guide BQ41Z50 Technical Reference Manual PDF | HTML 21 Jun 2024
EVM User's guide BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module User's Guide PDF | HTML 20 Jun 2024
Certificate BQ41z50EVM EU Declaration of Conformity (DoC) 10 Jun 2024

Design & development

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

Evaluation board

BQ41Z50EVM — BQ41Z50 evaluation module

The BQ41Z50EVM is a complete system for evaluating the functionality of the BQ41Z50 fuel gauge. This gauge is appropriate for applications powered by multicell battery systems. The circuit module includes one BQ41Z50 integrated circuit, one BQ296103, and all other onboard components necessary to (...)
User guide: PDF | HTML
Not available on TI.com
Firmware

BQ41Z50-FW BQ41Z50 device firmware

BQ41Z50-FW is a firmware-only release that can be flashed onto any existing BQ41Z50 hardware. The firmware incorporates the patented Dynamic Impedance Track™ technology to create a pack-based solution that provides a rich array of features for gas gauging, protection, and authentication for (...)

Supported products & hardware

Supported products & hardware

Products
Battery fuel gauges
BQ41Z50 2-4 series Li-ion highly integrated battery fuel gauge and protector
Hardware development
Evaluation board
BQ41Z50EVM BQ41Z50 evaluation module
Download options
Package Pins CAD symbols, footprints & 3D models
WQFN (RSN) 32 Ultra Librarian

Ordering & quality

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  • Assembly location

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