Detalles del producto

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
  • Works With the TI bq29311 Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics for 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
  • Measures Charge Flow Using a High Resolution 16-Bit Integrating Converter
    • Better Than 3-nVh of Resolution
    • Self-Calibrating
    • Offset Error Less Than 1 µV
  • Uses 16-Bit Delta Sigma Converter for Accurate Voltage and Temperature Measurements
  • Programmable Cell Modeling for Maximum Battery Fuel Gauge Accuracy
  • Drives 3-, 4-, or 5-Segment LED Display for Remaining Capacity Indication
  • 38-Pin TSSOP (DBT)
  • 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
  • Works With the TI bq29311 Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics for 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
  • Measures Charge Flow Using a High Resolution 16-Bit Integrating Converter
    • Better Than 3-nVh of Resolution
    • Self-Calibrating
    • Offset Error Less Than 1 µV
  • Uses 16-Bit Delta Sigma Converter for Accurate Voltage and Temperature Measurements
  • Programmable Cell Modeling for Maximum Battery Fuel Gauge Accuracy
  • Drives 3-, 4-, or 5-Segment LED Display for Remaining Capacity Indication
  • 38-Pin TSSOP (DBT)
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

The bq2085-V1P3 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 bq2085-V1P3 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 bq29311 analog front-end (AFE) protection IC to maximize functionality and safety and minimize component count and cost in smart battery circuits. Using information from the bq2085-V1P3, the host controller can manage remaining battery power to extend the system run time as much as possible.

The bq2085-V1P3 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 3-nVh and an offset measurement error of less than 1-µV (typical). For voltage and temperature reporting, the bq2085-V1P3 uses a 16-bit A-to-D converter. In conjunction with the bq29311, the onboard ADC also monitors individual cell voltages in a battery pack and allows the bq2085-V1P3 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 bq2085-V1P3 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 bq2085-V1P3 provides LED drivers and a push-button 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 bq2085-V1P3 contains 512 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 bq2085-V1P3 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 bq29311 AFE protection IC provides power to the bq2085-V1P3 from a 3 or 4 series Li-ion cell stack, eliminating the need for an external regulator circuit.

The bq2085-V1P3 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 bq2085-V1P3 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 bq29311 analog front-end (AFE) protection IC to maximize functionality and safety and minimize component count and cost in smart battery circuits. Using information from the bq2085-V1P3, the host controller can manage remaining battery power to extend the system run time as much as possible.

The bq2085-V1P3 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 3-nVh and an offset measurement error of less than 1-µV (typical). For voltage and temperature reporting, the bq2085-V1P3 uses a 16-bit A-to-D converter. In conjunction with the bq29311, the onboard ADC also monitors individual cell voltages in a battery pack and allows the bq2085-V1P3 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 bq2085-V1P3 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 bq2085-V1P3 provides LED drivers and a push-button 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 bq2085-V1P3 contains 512 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 bq2085-V1P3 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 bq29311 AFE protection IC provides power to the bq2085-V1P3 from a 3 or 4 series Li-ion cell stack, eliminating the need for an external regulator circuit.

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Documentación técnica

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Tipo Título Fecha
* Data sheet bq2085-V1P3: SBS-Compliant Gas Gauge IC For Use With The bq29311 datasheet 23 feb 2004
Application note Wide-Vin Battery-Charger Using SMBus MSP430 MCUs and bq Fuel Gauges (Rev. B) PDF | HTML 12 jul 2019
Application note Thermistor Coefficient Calculator for TI Advanced Fuel Gauges 04 oct 2006
Application note bq2083, bq2084, and bq2085 Calibration Procedure (Rev. A) 15 sep 2004

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Soporte de software

SLVC167 bq2083-bq2085 EVSW Install v2p5

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Medidores de carga de baterías
BQ2083-V1P3 Indicador de gas conforme a SBS para su uso con bq29311 BQ2085 Indicador de gas conforme a SBS 1.1 con oscilador integrado para su uso con bq29311 BQ2085-V1P3 CI de indicador de gas conforme a SBS para su uso con bq29311
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TSSOP (DBT) 38 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

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