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BQ40Z50-R2 ACTIVE 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0 SHA-1 authentication, TURBO mode 2.0, black box recorder, adaptive charging

Product details

Cell chemistry Li-Ion/Li-Polymer Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (min) (mAh) 500 Battery capacity (max) (mAh) 15000 Implementation Pack External capacity indication LED Features Coulomb Counter Operating temperature range (°C) -20 to 85 Cell balancing Internal Rating Catalog
Cell chemistry Li-Ion/Li-Polymer Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (min) (mAh) 500 Battery capacity (max) (mAh) 15000 Implementation Pack External capacity indication LED Features Coulomb Counter Operating temperature range (°C) -20 to 85 Cell balancing Internal Rating Catalog
TSSOP (DBT) 38 62.08 mm² 9.7 x 6.4
  • Provides Accurate Measurement of Available Charge in Li-Ion and Li-Polymer Batteries
  • Supports the Smart Battery Specification (SBS) V1.1
  • Integrated Time Base Removes Need for External Crystal with Optional Crystal input
  • Works With the TI bq29312A Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics for 7.2-V, 10.8-V or 14.4-V Battery Packs With Few External Components
  • Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals
  • Integrated Flash Memory Eliminates the Need for External Configuration EEPROM
  • Uses 16-Bit Delta Sigma Converter for Accurate Voltage and Temperature Measurements
  • Measures Charge Flow Using a High Resolution 16-Bit Integrating Converter
    • Better Than 0.65-nVh of Resolution
    • Self-Calibrating
    • Offset Error Less Than 1-µV
  • Programmable Cell Modeling for Maximum Battery Fuel Gauge Accuracy
  • Drives 3-, 4-, or 5-Segment LED Display for Remaining Capacity Indication
  • Available in a 38-Pin TSSOP (DBT) Package
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

  • Provides Accurate Measurement of Available Charge in Li-Ion and Li-Polymer Batteries
  • Supports the Smart Battery Specification (SBS) V1.1
  • Integrated Time Base Removes Need for External Crystal with Optional Crystal input
  • Works With the TI bq29312A Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics for 7.2-V, 10.8-V or 14.4-V Battery Packs With Few External Components
  • Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals
  • Integrated Flash Memory Eliminates the Need for External Configuration EEPROM
  • Uses 16-Bit Delta Sigma Converter for Accurate Voltage and Temperature Measurements
  • Measures Charge Flow Using a High Resolution 16-Bit Integrating Converter
    • Better Than 0.65-nVh of Resolution
    • Self-Calibrating
    • Offset Error Less Than 1-µV
  • Programmable Cell Modeling for Maximum Battery Fuel Gauge Accuracy
  • Drives 3-, 4-, or 5-Segment LED Display for Remaining Capacity Indication
  • Available in a 38-Pin TSSOP (DBT) Package
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

The bq2084-V150 SBS-compliant gas gauge IC for battery pack or in-system installation maintains an accurate record of available charge in Li-ion or Li-polymer batteries. The bq2084-V150 monitors capacity and other critical parameters of the battery pack and reports the information to the system host controller over a serial communication bus. It is designed to work with the bq29312A AFE protection IC to maximize functionality and safety and minimize component count and cost in smart battery circuits. Using information from the bq2084-V150, the host controller can manage remaining battery power to extend the system run time as much as possible.

The bq2084-V150 uses an integrating converter with continuous sampling for the measurement of battery charge and discharge currents. Optimized for coulomb counting in portable applications, the self-calibrating integrating converter has a resolution better than 0.65-nVh and an offset measurement error of less than 1-µV (typical). For voltage and temperature reporting, the bq2084-V150 uses a 16-bit A-to-D converter. With the bq29312A, the onboard ADC also monitors the pack and individual cell voltages in a battery pack and allows the bq2084-V150 to generate the control signals necessary to implement the cell balancing and the required safety protection for Li-ion and Li-polymer battery chemistries.

The bq2084-V150 supports the Smart Battery Data (SBData) commands and charge-control functions. It communicates data using the System Management Bus (SMBus) 2-wire protocol. The data available include the battery's remaining capacity, temperature, voltage, current, and remaining run-time predictions.

The bq2084-V150 provides LED drivers and a pushbutton input to depict remaining battery capacity from full to empty in 20%, 25%, or 33% increments with a 3-, 4-, or 5-segment display.

The bq2084-V150 contains 1k bytes of internal data flash memory, which store configuration information. The information includes nominal capacity and voltage, self-discharge rate, rate compensation factors, and other programmable cell-modeling factors used to accurately adjust remaining capacity for use-conditions based on time, rate, and temperature. The bq2084-V150 also automatically calibrates or learns the true battery capacity in the course of a discharge cycle from programmable near full to near empty levels.

The bq29312A analog front-end (AFE) protection IC is used to maximize functionality and safety and minimize component count and cost in smart battery circuits. The bq29312A AFE protection IC provides power to the bq2084-V150 from a 2-, 3-, or 4-series Li-ion cell stack, eliminating the need for an external regulator circuit.

The bq2084-V150 SBS-compliant gas gauge IC for battery pack or in-system installation maintains an accurate record of available charge in Li-ion or Li-polymer batteries. The bq2084-V150 monitors capacity and other critical parameters of the battery pack and reports the information to the system host controller over a serial communication bus. It is designed to work with the bq29312A AFE protection IC to maximize functionality and safety and minimize component count and cost in smart battery circuits. Using information from the bq2084-V150, the host controller can manage remaining battery power to extend the system run time as much as possible.

The bq2084-V150 uses an integrating converter with continuous sampling for the measurement of battery charge and discharge currents. Optimized for coulomb counting in portable applications, the self-calibrating integrating converter has a resolution better than 0.65-nVh and an offset measurement error of less than 1-µV (typical). For voltage and temperature reporting, the bq2084-V150 uses a 16-bit A-to-D converter. With the bq29312A, the onboard ADC also monitors the pack and individual cell voltages in a battery pack and allows the bq2084-V150 to generate the control signals necessary to implement the cell balancing and the required safety protection for Li-ion and Li-polymer battery chemistries.

The bq2084-V150 supports the Smart Battery Data (SBData) commands and charge-control functions. It communicates data using the System Management Bus (SMBus) 2-wire protocol. The data available include the battery's remaining capacity, temperature, voltage, current, and remaining run-time predictions.

The bq2084-V150 provides LED drivers and a pushbutton input to depict remaining battery capacity from full to empty in 20%, 25%, or 33% increments with a 3-, 4-, or 5-segment display.

The bq2084-V150 contains 1k bytes of internal data flash memory, which store configuration information. The information includes nominal capacity and voltage, self-discharge rate, rate compensation factors, and other programmable cell-modeling factors used to accurately adjust remaining capacity for use-conditions based on time, rate, and temperature. The bq2084-V150 also automatically calibrates or learns the true battery capacity in the course of a discharge cycle from programmable near full to near empty levels.

The bq29312A analog front-end (AFE) protection IC is used to maximize functionality and safety and minimize component count and cost in smart battery circuits. The bq29312A AFE protection IC provides power to the bq2084-V150 from a 2-, 3-, or 4-series Li-ion cell stack, eliminating the need for an external regulator circuit.

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Technical documentation

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Type Title Date
* Data sheet SBS v1.1-COMPLIANT GAS GAUGE WITH LED DELAY datasheet 15 Mar 2007
Application note Wide-Vin Battery-Charger Using SMBus MSP430 MCUs and bq Fuel Gauges (Rev. B) PDF | HTML 12 Jul 2019

Design & development

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

Support software

EV2300-084 bq2084 Evaluation Software

The Evaluation Software (EVSW) is a Windows application that works in conjunction with the bq2084 Evaluation Module (EVM). Also required, is the EV2300 USB interface board. This program provides a comprensive set of tools to allow easy evaluation of the bq2084 advanced gas gauge.

Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
BQ29312 Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE
Battery fuel gauges
BQ2084-V143 SBS v1.1 compliant gas gauge for use with the BQ29312A BQ2084-V150 SBS v1.1 compliant gas gauge with LED Delay
Package Pins CAD symbols, footprints & 3D models
TSSOP (DBT) 38 Ultra Librarian

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