Firmware
Data sheet
BQ41Z50
- 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.
Technical documentation
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View all 5 | 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
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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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WQFN (RSN) | 32 | Ultra Librarian |
Ordering & quality
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- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
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Information included:
- Fab location
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