Product details

Rating Catalog Number of series cells (max) 10 Number of series cells (min) 3 Features Digital output, High-side driver, I2C support, Integrated ADC, LDO output, Multi-cell support, One-time-programmable (OTP) memory, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Scratchpad memory, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 55 Communication interface HDQ, I2C, SPI Device type Cell monitor and balancer Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Operating current (typ) (µA) 250
Rating Catalog Number of series cells (max) 10 Number of series cells (min) 3 Features Digital output, High-side driver, I2C support, Integrated ADC, LDO output, Multi-cell support, One-time-programmable (OTP) memory, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Scratchpad memory, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 55 Communication interface HDQ, I2C, SPI Device type Cell monitor and balancer Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Operating current (typ) (µA) 250
TQFP (PFB) 48 81 mm² 9 x 9
  • Battery monitoring capability for 3-series to 10-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 < 1 µV (typical)
    • High-accuracy cell voltage measurement < 10  mV (typical)
  • Wide-range current applications (±200-mV 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: 286 µA
    • Multiple SLEEP mode options: 24 µA to 41 µA
    • Multiple DEEPSLEEP mode options: 9 µA to 10 µA
    • SHUTDOWN Mode: 1 µA
  • High-voltage tolerance of 85 V 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 nine external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400-kHz I2C, SPI, and HDQ one-wire interface
  • Dual programmable LDOs for external system usage
  • 48-pin TQFP package (PFB)
  • Battery monitoring capability for 3-series to 10-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 < 1 µV (typical)
    • High-accuracy cell voltage measurement < 10  mV (typical)
  • Wide-range current applications (±200-mV 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: 286 µA
    • Multiple SLEEP mode options: 24 µA to 41 µA
    • Multiple DEEPSLEEP mode options: 9 µA to 10 µA
    • SHUTDOWN Mode: 1 µA
  • High-voltage tolerance of 85 V 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 nine external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400-kHz I2C, SPI, and HDQ one-wire interface
  • Dual programmable LDOs for external system usage
  • 48-pin TQFP package (PFB)

The Texas Instruments BQ76942 is a highly integrated, high accuracy battery monitor and protector for 3-series to 10-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, dual programmable LDOs for external system use, and a host communication peripheral supporting 400-kHz I2C, SPI, and HDQ one-wire standards. The BQ76942 is available in a 48-pin TQFP package.

The Texas Instruments BQ76942 is a highly integrated, high accuracy battery monitor and protector for 3-series to 10-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, dual programmable LDOs for external system use, and a host communication peripheral supporting 400-kHz I2C, SPI, and HDQ one-wire standards. The BQ76942 is available in a 48-pin TQFP package.

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

Similar products you might be interested in

open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
BQ76952 ACTIVE 3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4 Same features as BQ76942, but optimized for up to 16s battery packs

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 20
Top documentation Type Title Format options Date
* Data sheet BQ76942 3-Series to 10-Series High Accuracy Battery Monitor and Protector datasheet (Rev. B) 02 Dec 2021
* User guide BQ76942 Technical Reference Manual (Rev. B) PDF | HTML 11 May 2022
Application note Why is short-circuit protection more challenging for high- side driver battery packs than low-side driver? PDF | HTML 23 Jan 2026
Application note BQ769X2 OTP Program Example Guide With Sealed Configuration 24 Feb 2025
Application note BQ769x2 Frequently Asked Questions PDF | HTML 29 Mar 2024
Application note Design Considerations of Stacked BQ769x2 With High-Side N-MOSFET PDF | HTML 09 Feb 2023
Application note Using Low-Side FETs with the BQ769x2 Battery Monitor Family (Rev. A) PDF | HTML 24 Feb 2022
Application note Cell Balancing With BQ769x2 Battery Monitors (Rev. A) PDF | HTML 15 Feb 2022
Application note Multiple FETs with the BQ76952, BQ76942 Battery Monitors (Rev. A) 03 Dec 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 Pin Equivalent Diagrams for the BQ76952, BQ76942, and BQ769142 06 May 2021
Technical article How to stack battery monitors for high-cell-count industrial applications PDF | HTML 11 Feb 2021
Application note BQ76942 IEC ESD 61000-4-2 ESD Test Report 16 Nov 2020
Application note Easy Configuration of BQ76942/52 Battery Monitors (Rev. A) 01 Oct 2020
Technical article CURRENTly questioning the accuracy of your battery monitor? Improve battery safety PDF | HTML 28 May 2020
Technical article Improving voltage measurement accuracy in battery monitoring systems PDF | HTML 01 Apr 2020
Technical article Improving temperature measurement accuracy in battery monitoring systems PDF | HTML 20 Feb 2020
Application note Parallel Paths with the BQ769x2 Battery Monitor 09 Jan 2020
Technical article Next-generation battery monitors: how to improve battery safety while improving ac PDF | HTML 06 Jan 2020

Design & development

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

Evaluation board

BQ76942EVM — 3-series to 10-series Li-ion, Li-polymer and LiFePO4 battery monitor and protector EVM

The BQ76942EVM evaluation module (EVM) is a complete evaluation system for the BQ76942, a 3-cell to 10-cell Li-Ion battery monitor integrated circuit. The EVM consists of a BQ76942 circuit module which is used for simple evaluation of the BQ76942 monitor function. The circuit module includes one (...)

User guide: PDF
Not available on TI.com
Application software & framework

BQ769X2-THERMISTOR-COEFF-CALCULATOR — BQ76952/42 thermistor temperature optimizer - calculate the thermistors coefficients for T range

The BQ769x2 family of battery monitors can support multiple external thermistors. The device includes an internal pullup resistor to bias the thermistor during measurement. The internal pullup resistor has two options which can set the pullup to 18 kΩ or 180 kΩ. The 18-kΩ option (...)
Application software & framework

BQSTUDIO-STABLE Battery Management Studio (bqStudio) Software – stable version downloads for bq series of TI battery fuel gauges

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 (...)

Supported products & hardware

Supported products & hardware

Download options
Application software & framework

BQSTUDIO-TEST Battery Management Studio (bqStudio) Software – Beta version downloads

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 (...)

Supported products & hardware

Supported products & hardware

Download options
Code example or demo

SLUC701 Microcontroller Code Examples for BQ769x2 Battery Monitors

Supported products & hardware

Supported products & hardware

Package Pins CAD symbols, footprints & 3D models
TQFP (PFB) 48 Ultra Librarian

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

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