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BQ27Z561-R2

ACTIVE

Impedance track battery gas gauge solution for 1-series cell li-ion battery packs

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Data sheet
User guides

BQ27Z561-R2

ACTIVE
Data sheet Order now

Product details

Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells Single Cell Communication interface HDQ, I2C Battery capacity (min) (mAh) 100 Battery capacity (max) (mAh) 32000 Implementation Pack External capacity indication None Features Impedance Track™ algorithm, SHA-256 Authentication Operating temperature range (°C) -40 to 85 Rating Catalog
Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells Single Cell Communication interface HDQ, I2C Battery capacity (min) (mAh) 100 Battery capacity (max) (mAh) 32000 Implementation Pack External capacity indication None Features Impedance Track™ algorithm, SHA-256 Authentication Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YPH) 12 2.8896 mm² 2.064 x 1.4
  • Supports high-side and low-side current sense resistors down to 1 mΩ
  • Supports pack-side gauging including enhanced state of health (SOH) algorithm
  • Fast QMax update option based on predicted OCV
  • SHA-256 authentication responder for increased battery pack security
  • Sophisticated charge algorithms
    • JEITA
    • Enhanced charging
    • RSOC charging compensation option
  • Two independent ADCs
    • Support for simultaneous current and voltage sampling
    • High-accuracy coulomb counter with input offset error < 1 µV (typical)
  • Low-voltage (2-V) operation
  • Wide-range current applications (1 mA to > 5 A)
  • Active high or low pulse or level interrupt pin
  • Supports battery trip point (BTP)
  • Reduced power modes (typical battery pack operating range conditions)
    • Typical SLEEP mode: < 11 µA
    • Typical DEEP SLEEP mode: < 9 µA
    • Typical HIBERNATE mode: < 3 µA
    • Typical OFF mode: < 1.9 µA
  • Internal and external temperature sense functions
  • Diagnostic lifetime data monitor and black box recorder
  • 400-kHz I2C bus communications interface for high-speed programming and data access
  • HDQ one-wire for communication with host
  • Compact 12-pin DSBGA package (YPH)
  • Supports high-side and low-side current sense resistors down to 1 mΩ
  • Supports pack-side gauging including enhanced state of health (SOH) algorithm
  • Fast QMax update option based on predicted OCV
  • SHA-256 authentication responder for increased battery pack security
  • Sophisticated charge algorithms
    • JEITA
    • Enhanced charging
    • RSOC charging compensation option
  • Two independent ADCs
    • Support for simultaneous current and voltage sampling
    • High-accuracy coulomb counter with input offset error < 1 µV (typical)
  • Low-voltage (2-V) operation
  • Wide-range current applications (1 mA to > 5 A)
  • Active high or low pulse or level interrupt pin
  • Supports battery trip point (BTP)
  • Reduced power modes (typical battery pack operating range conditions)
    • Typical SLEEP mode: < 11 µA
    • Typical DEEP SLEEP mode: < 9 µA
    • Typical HIBERNATE mode: < 3 µA
    • Typical OFF mode: < 1.9 µA
  • Internal and external temperature sense functions
  • Diagnostic lifetime data monitor and black box recorder
  • 400-kHz I2C bus communications interface for high-speed programming and data access
  • HDQ one-wire for communication with host
  • Compact 12-pin DSBGA package (YPH)

The Texas Instruments BQ27Z561-R2 Impedance Track™ gas gauge solution is a highly integrated, accurate 1-series cell gas gauge with a flash programmable custom reduced instruction-set CPU (RISC) and SHA-256 authentication for Li-ion and Li-polymer battery packs. The 1-series cell capability includes parallel cells for increased capacity.

The BQ27Z561-R2 gas gauge communicates through I2C-compatible and HDQ one-wire interfaces and includes several key features that can help facilitate accurate gas gauging applications. Integrated temperature sense functions (internal and external options) enable system and battery temperature measurements.

The Texas Instruments BQ27Z561-R2 Impedance Track™ gas gauge solution is a highly integrated, accurate 1-series cell gas gauge with a flash programmable custom reduced instruction-set CPU (RISC) and SHA-256 authentication for Li-ion and Li-polymer battery packs. The 1-series cell capability includes parallel cells for increased capacity.

The BQ27Z561-R2 gas gauge communicates through I2C-compatible and HDQ one-wire interfaces and includes several key features that can help facilitate accurate gas gauging applications. Integrated temperature sense functions (internal and external options) enable system and battery temperature measurements.
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BQ27Z561 ACTIVE Impedance Track™ integrated circuit gas gauge solution for 1-series BQ27Z561 is the previous firmware release
BQ27Z561-R1 ACTIVE Impedance Track™ battery gas gauge solution for 1-series cell Li-ion battery packs BQ27Z561-R1 is the previous firmware release

Technical documentation

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Type Title Date
* Data sheet BQ27Z561-R2 Impedance Track™ Battery Gas Gauge Solution for 1-Series Cell Li-Ion Battery Packs datasheet (Rev. B) PDF | HTML 16 Nov 2022
* User guide BQ27Z561-R2 Technical Reference Manual (Rev. B) 08 May 2020
More literature BQ27Z561-R1 to BQ27Z561-R2 Change List 26 Feb 2020
More literature Achieving The Successful Learning Cycle 19 Jun 2018
More literature Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) 05 Jun 2018
More literature Gauge Communication 12 Jan 2017

Design & development

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

Evaluation board

BQ27Z561EVM-011 — BQ27Z561 1S-cell programmable battery manager Evaluation module

This evaluation module (EVM) is a complete evaluation system for the BQ27Z561 battery management system. The EVM includes a BQ27Z561 integrated circuit (IC) and all other components necessary to monitor and predict capacity and other parameters of a 1-series Li-ion or Li-polymer battery pack. The (...)

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

BQ27Z561-R2-DEVICE-FW — BQ27Z561 firmware: impedance track battery gas gauge solution for 1-s cell li-ion battery

The BQ27Z561-R2-DEVICE-FW is a firmware (FW) release that can be flashed onto any existing hardware such as the BQ27Z561 or BQ27Z561-R1 product. The firmware incorporates the patented Impedance Track™ technology to create a pack-based solution that provides a rich array of features for gas (...)
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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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Software programming tool

BQ-PRODUCTION-SINGLE-CELL-SW — Production software for single cell battery fuel (gas) gauges

SingleCellbqProduction offers a full suite of robust tools to assist with the process of configuring, calibrating, manufacturing and tracking printed circuit boards utilizing TI's battery battery management products. This includes features that allow writing a golden image followed by different (...)

Supported products & hardware

Supported products & hardware

Products
Battery fuel gauges
BQ27320 — Single cell pack/System-side CEDV battery fuel (gas) gauge BQ27Z561 — Impedance Track™ integrated circuit gas gauge solution for 1-series BQ27Z561-R1 — Impedance Track™ battery gas gauge solution for 1-series cell Li-ion battery packs BQ27Z561-R2 — Impedance track battery gas gauge solution for 1-series cell li-ion battery packs
Hardware development
Evaluation board
BQ27320EVM-766 — bq27320 System-Side Fuel Gauge with Integrated LDO Evaluation Module BQ27Z561EVM-011 — BQ27Z561 1S-cell programmable battery manager Evaluation module
Software
Application software & framework
BQSTUDIO — Battery Management Studio (bqStudio) Software BQ27Z561-R2-DEVICE-FW — BQ27Z561 firmware: impedance track battery gas gauge solution for 1-s cell li-ion battery
Download options
Software programming tool

BQKEYPROGRAMMER — Program Key Software for Battery Fuel Gauges

Several TI Fuel Gauge products support authentication for anti-counterfeit protection of battery packs. The selection of the battery authentication scheme between SHA and ECC is left to the user to decide. bqKeyPackager is provided to package the key, and bqKeyProgrammer is provided to program the (...)
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Package Pins Download
DSBGA (YPH) 12 View options

Ordering & quality

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  • Lead finish/Ball material
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  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring

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

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