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

Device type

Cell monitor and balancer

Number of series cells (max)

16

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, SPI

Operating current (typ) (µA)

250

Number of series cells (min)

3

Vin (max) (V)

80

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

Device type

Cell monitor and balancer

Number of series cells (max)

16

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, SPI

Operating current (typ) (µA)

250

TQFP (PFB)

48

81 mm² 9 x 9

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)

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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BQ76942

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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)	PDF \| HTML	15 Nov 2021
*	User guide	BQ76952 Technical Reference Manual (Rev. B)	PDF \| HTML	11 May 2022
	Technical article	페달에 전원 공급 전기 자전거 및 전기 스쿠터를 위한 더 오래 지속되 는 13S, 48V 리튬 이온 배터리 팩 구현 (Rev. A)	PDF \| HTML	22 May 2024
	Technical article	為踏板供電：實現適用於電動自行車與電動機車且續航力更長的 13S、48-v 鋰離子電池組 (Rev. A)	PDF \| HTML	21 May 2024
	Technical article	Power to the pedal: Achieving longer-lasting 13S, 48-V lithium-ion battery packs f (Rev. A)	PDF \| HTML	16 May 2024
	Application note	BQ769x2 Frequently Asked Questions	PDF \| HTML	29 Mar 2024
	Application brief	Scaling accurate battery management designs across energy storage systems	PDF \| HTML	20 Oct 2023
	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
	Technical article	Pack a punch in battery pack systems with low-cost MCUs	PDF \| HTML	16 Nov 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
	Application note	BQ76952 High Voltage Stress Report	PDF \| HTML	25 Feb 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
	EVM User's guide	BQ76952EVM User's Guide (Rev. A)		01 Oct 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

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 (...)

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 (...)

View Options

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

Products

Battery monitors & balancers

BQ76942 — 3-series to 10-series multicell battery monitor and protector

BQ76952 — 3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4

Battery charger ICs

BQ24800 — SMBus 1-4 cell Buck battery charge controller to support hybrid power boost and battery boost mode

BQ25720 — SMBus 1- to 4-cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG

BQ25723 — I²C 1-4 cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG

BQ25731 — I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support

BQ25790 — Integrated, NVDC, 5-A 1-cell to 4-cell switch-mode buck-boost battery charger

BQ25792 — I2C controlled, 5-A, 1-4 cell buck-boost charger with dual-input selector and USB PD 3.0 OTG output

Battery fuel gauges

BQ27220 — Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles

BQ27320 — Single cell pack/System-side CEDV battery fuel (gas) gauge

BQ27425-G1 — System-side Impedance Track™; fuel gauge with direct battery connection | gas gauge battery

BQ27425-G2A — System-side Impedance Track™; fuel gauge for LiCoO2 battery

BQ27425-G2B — System-side Impedance Track™; fuel gauge LiMn2O4 battery

BQ27520-G4 — System side Impedance Track™ fuel gauge with integrated LDO.

BQ27530-G1 — System-side Impedance-Track fuel (gas) gauge with direct battery connection

BQ27531-G1 — Battery management unit Impedance Track™ fuel (gas) gauge for bq2419x charger controller

BQ27532-G1 — Battery management unit Impedance Track™ fuel gauge for bq2425x charger

BQ27545-G1 — Single cell, pack side, Impedance Track™ fuel gauge

BQ27546-G1 — Single cell Impedance Track™ pack side fuel gauge with DSBGA package

BQ27621-G1 — System-side fuel gauge with Dynamic Voltage Correlation, battery gas gauge

BQ27741-G1 — Pack-side Impedance Track™(tm) fuel (gas) gauge with integrated protector

BQ27742-G1 — Single cell Li-ion battery fuel gauge with integrated protection | battery gas gauge

BQ27Z561 — Impedance Track™ integrated circuit gas gauge solution for 1-series

BQ28Z610 — Battery fuel gauge with integrated protector for 1-2 series packs

BQ34110 — Multi-chemistry high-cell Count battery fuel gauge with integrated rarely discharged module

BQ34210-Q1 — Automotive Qualified Single cell system-side CEDV fuel gauge

BQ34Z100-G1 — Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge

BQ35100 — Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor

BQ4050 — 1-4 series CEDV battery fuel (gas) gauge

BQ40Z50 — 1-4 series Li-ion battery pack manager | battery fuel (gas) gauge

BQ40Z50-R1 — 1-4 series Li-ion battery pack manager supporting Turbo Mode 1.0

BQ40Z50-R2 — 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0

BQ40Z60 — Complete multi-cell battery manager | battery fuel (gas) gauge

BQ40Z80 — 2-s to 6-s battery pack manager with Impedance Track™ gas gauging

BQ78350 — Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family

BQ78350-R1 — CEDV li-ion gas gauge and battery management controller

BQ78Z100 — Impedance Track™ battery fuel (gas) gauge for 1-series to 2-series

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

Products

Battery monitors & balancers

BQ76905 — Low-power monitor and protector for 2S to 5S with high accuracy cell voltage measurement

BQ76907 — Low-power monitor and protector for 2S to 7S with high accuracy cell voltage measurement

BQ769142 — 3-s to 14-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4 battery

BQ76942 — 3-series to 10-series multicell battery monitor and protector

BQ76952 — 3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4

BQ76972 — 3s-to-16s high-accuracy battery monitor and protector for Li-ion, Li-poly and LiFePO4

Battery charger ICs

BQ24800 — SMBus 1-4 cell Buck battery charge controller to support hybrid power boost and battery boost mode

BQ25720 — SMBus 1- to 4-cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG

BQ25723 — I²C 1-4 cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG

BQ25731 — I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support

BQ25756 — Stand-alone or I²C-controlled 70-V bidirectional buck-boost charge controller with MPPT

BQ25790 — Integrated, NVDC, 5-A 1-cell to 4-cell switch-mode buck-boost battery charger

BQ25792 — I2C controlled, 5-A, 1-4 cell buck-boost charger with dual-input selector and USB PD 3.0 OTG output

Battery fuel gauges

BQ27220 — Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles

BQ27320 — Single cell pack/System-side CEDV battery fuel (gas) gauge

BQ27425-G1 — System-side Impedance Track™; fuel gauge with direct battery connection | gas gauge battery

BQ27425-G2A — System-side Impedance Track™; fuel gauge for LiCoO2 battery

BQ27425-G2B — System-side Impedance Track™; fuel gauge LiMn2O4 battery

BQ27427 — Single-cell battery fuel gauge with pre-programmed chemistry and integrated sense resistor