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) 30000 Implementation Pack External capacity indication None Features Impedance Track™ algorithm, SHA-256 Authentication Operating temperature range (C) -40 to 85 Cell balancing
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) 30000 Implementation Pack External capacity indication None Features Impedance Track™ algorithm, SHA-256 Authentication Operating temperature range (C) -40 to 85 Cell balancing
DSBGA (YPH) 12 3 mm² 2.09 x 1.715
  • Supports 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 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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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. A) 11 Nov 2021
* User guide BQ27Z561-R2 Technical Reference Manual (Rev. B) 08 May 2020
Application note BQ27Z561-R1 to BQ27Z561-R2 Change List 26 Feb 2020
Application note Achieving The Successful Learning Cycle 19 Jun 2018
Application note Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) 05 Jun 2018
Application note 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 bq27z561  and bq2980  circuit modules and a link to Windows® based PC software. The circuit modules includes bq27z561 and bq2980 integrated circuits (ICs), and (...)
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 (...)
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 (...)
Application software & framework

bq Key Packager EVM GUI

SLUC665.ZIP (135883 KB)
lock = Requires export approval (1 minute)
Firmware

bq Key Programmer EVM GUI (Rev. A)

SLUC666A.ZIP (148972 KB)
lock = Requires export approval (1 minute)
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 (...)
Package Pins Download
DSBGA (YPH) 12 View options

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