Home Battery management ICs Battery monitors & balancers
Home
Battery management ICs
Battery monitors & balancers

BQ76922

ACTIVE

Three-series to five-series cell lithium-ion and lithium-phosphate battery monitor

Order now
Data sheet

BQ76922

ACTIVE
Data sheet Order now

Product details

Number of series cells (min) 3 Vin (max) (V) 27.5 Features Cell balancing, High-side driver, I2C support, Integrated ADC, Multi-cell support, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Programmable EEPROM or EPROM, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection Number of series cells (max) 5 Operating temperature range (°C) -40 to 85 Rating Catalog Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Communication interface HDQ, I2C Operating current (typ) (µA) 250
Number of series cells (min) 3 Vin (max) (V) 27.5 Features Cell balancing, High-side driver, I2C support, Integrated ADC, Multi-cell support, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Programmable EEPROM or EPROM, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection Number of series cells (max) 5 Operating temperature range (°C) -40 to 85 Rating Catalog Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Communication interface HDQ, I2C Operating current (typ) (µA) 250
WQFN (RSN) 32 16 mm² 4 x 4
  • Battery monitoring capability for 3-series to 5-series cells
  • Integrated charge pump for high-side NFET protection with optional autonomous recovery
  • Extensive protection suite including voltage, temperature, current, and internal diagnostics
  • Two independent ADCs
    • Support for simultaneous current and voltage sampling
    • High-accuracy coulomb counter with input offset error < 1µV (typical)
    • High accuracy cell voltage measurement < 10mV (typical)
  • Wide-range current applications (±200mV measurement range across sense resistor)
  • Integrated secondary chemical fuse drive protection
  • Autonomous or host-controlled cell balancing
  • Multiple power modes (typical battery pack operating range conditions)
    • NORMAL mode: 286µA
    • Multiple SLEEP mode options: 24µA to 41µA
    • Multiple DEEPSLEEP mode options: 9µA to 10µA
    • SHUTDOWN mode: 1µA
  • High-voltage tolerance of 60V on cell connect and select additional pins
  • Tolerant of random cell attach sequence on production line
  • Support for temperature sensing using internal sensor and up to five external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400kHz I2C, and HDQ one-wire interface
  • Programmable LDO for external system usage
  • 32-pin QFN package (RSN)
  • Battery monitoring capability for 3-series to 5-series cells
  • Integrated charge pump for high-side NFET protection with optional autonomous recovery
  • Extensive protection suite including voltage, temperature, current, and internal diagnostics
  • Two independent ADCs
    • Support for simultaneous current and voltage sampling
    • High-accuracy coulomb counter with input offset error < 1µV (typical)
    • High accuracy cell voltage measurement < 10mV (typical)
  • Wide-range current applications (±200mV measurement range across sense resistor)
  • Integrated secondary chemical fuse drive protection
  • Autonomous or host-controlled cell balancing
  • Multiple power modes (typical battery pack operating range conditions)
    • NORMAL mode: 286µA
    • Multiple SLEEP mode options: 24µA to 41µA
    • Multiple DEEPSLEEP mode options: 9µA to 10µA
    • SHUTDOWN mode: 1µA
  • High-voltage tolerance of 60V on cell connect and select additional pins
  • Tolerant of random cell attach sequence on production line
  • Support for temperature sensing using internal sensor and up to five external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400kHz I2C, and HDQ one-wire interface
  • Programmable LDO for external system usage
  • 32-pin QFN package (RSN)

The Texas Instruments BQ76922 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 5-series Li-ion, Li-polymer, and LiFePO4 battery packs. The device includes a high-accuracy monitoring system, a highly configurable protection subsystem, and support for autonomous or host controlled cell balancing. Integration includes high-side charge-pump NFET drivers, a programmable LDO for external system use, and a host communication peripheral supporting 400kHz I2C and HDQ one-wire standards. The BQ76922 device is available in a 32-pin 4 × 4 mm QFN package.

The Texas Instruments BQ76922 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 5-series Li-ion, Li-polymer, and LiFePO4 battery packs. The device includes a high-accuracy monitoring system, a highly configurable protection subsystem, and support for autonomous or host controlled cell balancing. Integration includes high-side charge-pump NFET drivers, a programmable LDO for external system use, and a host communication peripheral supporting 400kHz I2C and HDQ one-wire standards. The BQ76922 device is available in a 32-pin 4 × 4 mm QFN package.
filter Find other Battery monitors & balancers
Download View video with transcript Video
Request more information

Functional safety information such as failure modes, effects and diagnostic analysis (FMEDA), safety analysis reports and safety manuals are available under NDA. Request now

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 8
Type Title Date
* Data sheet BQ76922 3-Series to 5-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, and LiFePO4 Battery Packs datasheet (Rev. A) PDF | HTML 03 Apr 2024
User guide BQ76922 Technical Reference Manual PDF | HTML 16 Apr 2024
Application note Cell Balancing With BQ769x2 Battery Monitors (Rev. A) PDF | HTML 15 Feb 2022
EVM User's guide BQ76922EVM User's Guide (Rev. A) PDF | HTML 18 Nov 2021
Certificate BQ76922EVM EU Declaration of Conformity (DoC) 26 Aug 2021
Application note BQ769x2 Software Development Guide (Rev. B) PDF | HTML 26 Aug 2021
Application note BQ769x2 Calibration and OTP Programming Guide (Rev. A) PDF | HTML 06 Aug 2021
Application note Parallel Paths with the BQ769x2 Battery Monitor 09 Jan 2020

Design & development

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

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 (...)
View Options
Package Pins CAD symbols, footprints & 3D models
WQFN (RSN) 32 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos