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Battery monitors & balancers

BQ76952

ACTIVE

3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4

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Data sheet
User guides

BQ76952

ACTIVE
Data sheet Order now

Product details

Number of series cells (Min) 3 Vin (Max) (V) 80 Features Digital output, High-side driver, I2C support, Integrated ADC, 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 Number of series cells (Max) 16 Rating Catalog
Number of series cells (Min) 3 Vin (Max) (V) 80 Features Digital output, High-side driver, I2C support, Integrated ADC, 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 Number of series cells (Max) 16 Rating Catalog
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TQFP (PFB) 48 81 mm² 9 x 9
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  • Battery monitoring capability for 3-series to 16-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 16-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)
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The Texas Instruments BQ76952 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 16-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 BQ76952 device is available in a 48-pin TQFP package.

The Texas Instruments BQ76952 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 16-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 BQ76952 device is available in a 48-pin TQFP package.

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Same functionality with different pin-out to the compared device.
BQ76942 ACTIVE 3-series to 10-series multicell battery monitor and protector Same features as BQ76952, but optimized for up to 10s battery packs

Technical documentation

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Type Title Date
* Data sheet BQ76952 3-Series to 16-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, and LiFePO4 Battery Packs datasheet (Rev. B) 15 Nov 2021
* User guide BQ76952 Technical Reference Manual (Rev. A) 12 Apr 2021
Technical article Pack a punch in battery pack systems with low-cost MCUs 16 Nov 2021
Application note BQ769x2 Software Development Guide (Rev. B) 26 Aug 2021
Application note BQ769x2 Calibration and OTP Programming Guide (Rev. A) 06 Aug 2021
Application note Pin Equivalent Diagrams for the BQ76952, BQ76942, and BQ769142 06 May 2021
Application note BQ76952 High Voltage Stress Report 25 Feb 2021
Technical article How to stack battery monitors for high-cell-count industrial applications 11 Feb 2021
Application note Using Low-Side FETs with the BQ76952 Battery Monitor Family 19 Jan 2021
Application note BQ76942 IEC ESD 61000-4-2 ESD Test Report 16 Nov 2020
Application note Cell Balancing with BQ76952, BQ76942 Battery Monitors 01 Oct 2020
Application note Easy Configuration of BQ76942/52 Battery Monitors (Rev. A) 01 Oct 2020
Application note Multiple FETs with the BQ76952, BQ76942 Battery Monitors 21 Sep 2020
Technical article CURRENTly questioning the accuracy of your battery monitor? Improve battery safety and accuracy with these tips 28 May 2020
Technical article Improving voltage measurement accuracy in battery monitoring systems 01 Apr 2020
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.

Evaluation board

BQ76952EVM — 3-s to 16-s Li-ion, Li-polymer, and LiFePO4 battery monitor and protector evaluation module

The BQ76952EVM evaluation module (EVM) is a complete evaluation system for the BQ76952, a 3-cell to 16-cell Li-Ion battery monitor integrated circuit. The EVM consists of a BQ76952 circuit module which is used for simple evaluation of the BQ76952 monitor function. The circuit module includes one (...)

document-pdfAcrobat User guide
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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 (...)
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Code example or demo

Microcontroller Code Examples for BQ769x2 Battery Monitors (Rev. A)

SLUC701A.ZIP (166 KB)
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Calculation tool

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

The BQ769x2 Thermistor Temperature Optimizer will calculate the thermistor coefficients for the specific thermistor used in your application, as described in the sections “Calibration:18K Temperature Model”,  “Calibration:180K Temperature Model” and (...)
document-pdfAcrobat User guide
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Reference designs

TIDA-010208 — 10s-16s battery pack reference design with accurate cell measurement and high-side MOSFET control

This reference design is a low standby and ship-mode current consumption and high cell voltage accuracy 10s–16s Lithium-ion (Li-ion), LiFePO4 battery pack design. It monitors each cell voltage, pack current, cell and MOSFET temperature with high accuracy and protects the Li-ion, LiFePO4 (...)
document-pdfAcrobat Schematic
Package Pins Download
TQFP (PFB) 48 View options

Ordering & quality

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