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Detalles del producto

Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface I2C Battery capacity (min) (mAh) 300 Battery capacity (max) (mAh) 8000 Implementation System External capacity indication None Features Impedance Track™ algorithm Operating temperature range (°C) -40 to 85 Rating Catalog
Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface I2C Battery capacity (min) (mAh) 300 Battery capacity (max) (mAh) 8000 Implementation System External capacity indication None Features Impedance Track™ algorithm Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YZG) 12 3.9375 mm² 2.25 x 1.75
  • Battery Fuel Gauge for 1-Series Li-Ion Applications
  • Resides on System Main Board
    • Works With Embedded or Removable Battery Packs
  • Uses PACK+, PACK–, and T Battery Terminals
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for Battery Temperature Reporting
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • Configurable Level of State of Charge (SOC) Interrupts
    • State of Health Indicator
    • 96 Bytes of Non-Volatile Scratch-Pad FLASH
  • Battery Fuel Gauge Based on Patented Impedance Track™ Technology
    • Models the Battery Discharge Curve for Accurate Time-to-Empty Predictions
    • Automatically Adjusts for Battery Aging, Battery Self-Discharge,
      and Temperature/Rate Inefficiencies
    • Low-Value Sense Resistor (10 m or Less)
  • 400-kHz I2C™ Interface for Connection to System Microcontroller Port
  • In a 12-Pin NanoFree™ (CSP) Packaging
  • APPLICATIONS
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players


Impedance Track, NanoFree are trademarks of Texas Instruments.
I2C is a trademark of Philips Electronics.

  • Battery Fuel Gauge for 1-Series Li-Ion Applications
  • Resides on System Main Board
    • Works With Embedded or Removable Battery Packs
  • Uses PACK+, PACK–, and T Battery Terminals
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for Battery Temperature Reporting
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • Configurable Level of State of Charge (SOC) Interrupts
    • State of Health Indicator
    • 96 Bytes of Non-Volatile Scratch-Pad FLASH
  • Battery Fuel Gauge Based on Patented Impedance Track™ Technology
    • Models the Battery Discharge Curve for Accurate Time-to-Empty Predictions
    • Automatically Adjusts for Battery Aging, Battery Self-Discharge,
      and Temperature/Rate Inefficiencies
    • Low-Value Sense Resistor (10 m or Less)
  • 400-kHz I2C™ Interface for Connection to System Microcontroller Port
  • In a 12-Pin NanoFree™ (CSP) Packaging
  • APPLICATIONS
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players


Impedance Track, NanoFree are trademarks of Texas Instruments.
I2C is a trademark of Philips Electronics.

The Texas Instruments bq27505 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires little system micro- controller firmware development. The bq27505 resides on the system’s main board and manages an embedded battery (non-removable) or a removable battery pack.

The bq27505 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of- charge (%), run-time to empty (min), battery voltage (mV), temperature (°C) and state of health (%).

Battery fuel gauging with the bq27505 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery circuit. The CSP option is a 12-ball package in the dimensions of 2,43 mm × 1,96 mm with 0,5 mm lead pitch. It is ideal for space constrained applications.

The Texas Instruments bq27505 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires little system micro- controller firmware development. The bq27505 resides on the system’s main board and manages an embedded battery (non-removable) or a removable battery pack.

The bq27505 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of- charge (%), run-time to empty (min), battery voltage (mV), temperature (°C) and state of health (%).

Battery fuel gauging with the bq27505 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery circuit. The CSP option is a 12-ball package in the dimensions of 2,43 mm × 1,96 mm with 0,5 mm lead pitch. It is ideal for space constrained applications.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet System-Side Impedance Track™ Fuel Gauge* datasheet (Rev. A) 24 feb 2010
Application note Going to Production With the bq275xx (Rev. F) 09 oct 2014
Application note Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm (Rev. A) PDF | HTML 16 may 2014
Application note Using I2C Communication With the bq275xx Series of Fuel Gauges (Rev. B) 15 may 2014
User guide bq27505EVM System-Side, Single-Cell Impedance Track™ (Rev. A) 04 oct 2013
Application note Thermistor Selection Guide for Texas Instruments Advanced Fuel Gauges 28 sep 2011
Application note Updating bq275xx Firmware at Production (Rev. A) 21 feb 2011
Application note bq27505-J2 to bq27505-J3 Change List 26 ene 2010
Application note bq27505-J3 to bq27505-J4 Change List 22 ene 2010
User guide bqEasy(TM) for bq27505 Impedance Track(TM) Devices 17 ago 2009
Application note How to Use bq27505 in a Smart Phone System 08 ago 2009
Application note Quick-Start Guide for bq27505 Family Gas Gauge 08 ago 2009
Application note Updating Firmware with the bq2750x and EVM. (Rev. A) 22 jul 2008

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.

Herramienta de programación de software

BQ-BMS-PROGRAMMER-SW Command line programmers for BQ products

BQ-BATTERY-PROGRAMMER-SW software development kit (SDK) is a collection of robust software command line tools that assist with the process of programming, testing, or assembling packs that use TI Battery management products. The executables in this software work with the MKST-3P-ALT-EV2300 MKS (...)

Productos y hardware compatibles

Productos y hardware compatibles

Opciones de descarga
Soporte de software

BQEVSW-MKST-UPDATE Software Update to enable BQEVSW to use MKST-3P-ALT-EV2300

BQ-BATTERY-PROGRAMMER-SW software development kit (SDK) is a collection of robust software command line tools that assist with the process of programming, testing, or assembling packs that use TI Battery management products. The executables in this software work with the MKST-3P-ALT-EV2300 MKS (...)

Productos y hardware compatibles

Productos y hardware compatibles

Opciones de descarga
Soporte de software

BQMTESTER-MKST-UPDATE Software Update to enable BQMTESTER to use MKST-3P-ALT-EV2300

BQ-BATTERY-PROGRAMMER-SW software development kit (SDK) is a collection of robust software command line tools that assist with the process of programming, testing, or assembling packs that use TI Battery management products. The executables in this software work with the MKST-3P-ALT-EV2300 MKS (...)

Productos y hardware compatibles

Productos y hardware compatibles

Opciones de descarga
Soporte de software

SLUC168 bq27505-J3 SENC file v2.20

Productos y hardware compatibles

Productos y hardware compatibles

Soporte de software

SLUC170 bq27505 Evaluation Software

Productos y hardware compatibles

Productos y hardware compatibles

Soporte de software

SLUC367 bqEVSW installer for all bq275xx devices

Productos y hardware compatibles

Productos y hardware compatibles

Símbolo CAD/CAE

Mathcad Chemistry Selection Tool (Rev. DJ)

SLUC138DJ.ZIP (6840 KB)
Herramienta de diseño

GASGAUGECHEM-SW Gas gauge chemistry updater

The chemistry updater installer contains data used by the bqEvaluation / bqEVSW / bqEASY tool for selecting the correct or closest chemical identification file for your battery pack.

The battery management studio (bqStudio) chemistry update zip file contains data used by bqStudio for selecting the (...)

Productos y hardware compatibles

Productos y hardware compatibles

Opciones de descarga
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
DSBGA (YZG) 12 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.

Si tiene alguna pregunta sobre calidad, encapsulados o pedido de productos de TI, consulte el servicio de asistencia de TI. ​​​​​​​​​​​​​​

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