Product details

Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface SMBus Battery capacity (Min) (mAh) 300 Battery capacity (Max) (mAh) 6000 Implementation Pack External capacity indication None Features SHA-1 Authentication Operating temperature range (C) -40 to 85 Cell balancing
Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface SMBus Battery capacity (Min) (mAh) 300 Battery capacity (Max) (mAh) 6000 Implementation Pack External capacity indication None Features SHA-1 Authentication Operating temperature range (C) -40 to 85 Cell balancing
VSON (DRZ) 12 10 mm² 4 x 2.5
  • A Comprehensive Single-Cell Li-Ion Battery Gas
    Gauge and Protection Integrates All Essential
    Functions:
    • Low-Side N-CH FET Protection Control
    • JEITA/Enhanced Charging
    • Authentication
  • Records Battery Gas Gauge Information
  • Protection Functions Help to Prevent:
    • Short-Circuit
    • Overcurrent Charge and Discharge
    • Overvoltage Charge (Overcharge)
    • Undervoltage (Over-Discharge)
  • Firmware Control of Discharge FET
  • SHA-1/HMAC Battery Authentication
  • General Purpose I/O Configurable for One
    of the Following:
    • CFET Control
    • ALERT Output
  • I2C Communications Interface with
    SBS Command Set Operation
  • 12-pin, 2.50-mm × 4.00-mm SON Package
  • A Comprehensive Single-Cell Li-Ion Battery Gas
    Gauge and Protection Integrates All Essential
    Functions:
    • Low-Side N-CH FET Protection Control
    • JEITA/Enhanced Charging
    • Authentication
  • Records Battery Gas Gauge Information
  • Protection Functions Help to Prevent:
    • Short-Circuit
    • Overcurrent Charge and Discharge
    • Overvoltage Charge (Overcharge)
    • Undervoltage (Over-Discharge)
  • Firmware Control of Discharge FET
  • SHA-1/HMAC Battery Authentication
  • General Purpose I/O Configurable for One
    of the Following:
    • CFET Control
    • ALERT Output
  • I2C Communications Interface with
    SBS Command Set Operation
  • 12-pin, 2.50-mm × 4.00-mm SON Package

The Texas Instruments bq28550-R1 battery gas gauge provides current and voltage protection, and secure, SHA-1/HMAC authentication for single-cell Lithium-Ion battery packs. Designed for battery-pack integration, the bq28550-R1 requires host microcontroller firmware support for implementation. A system processor communicates with the bq28550-R1 using a serial interface to obtain remaining battery capacity, system run-time predictions, and other critical battery information.

The bq28550-R1 gas gauge uses an accurate gas gauging algorithm to report the status of the cell. The gauge provides information such as state-of-charge (%), run-time-to-empty (min.), charge-time to full (min.), battery voltage (V), and pack temperature (°C).

The bq28550-R1 gas gauge also features integrated support for secure battery-pack authentication, using the SHA-1/HMAC authentication algorithm.

The Texas Instruments bq28550-R1 battery gas gauge provides current and voltage protection, and secure, SHA-1/HMAC authentication for single-cell Lithium-Ion battery packs. Designed for battery-pack integration, the bq28550-R1 requires host microcontroller firmware support for implementation. A system processor communicates with the bq28550-R1 using a serial interface to obtain remaining battery capacity, system run-time predictions, and other critical battery information.

The bq28550-R1 gas gauge uses an accurate gas gauging algorithm to report the status of the cell. The gauge provides information such as state-of-charge (%), run-time-to-empty (min.), charge-time to full (min.), battery voltage (V), and pack temperature (°C).

The bq28550-R1 gas gauge also features integrated support for secure battery-pack authentication, using the SHA-1/HMAC authentication algorithm.

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Technical documentation

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Type Title Date
* Data sheet bq28550-R1 Single Cell Li-Ion Battery Gas Gauge and Protection datasheet (Rev. A) 12 Jun 2014

Design & development

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

Application software & framework

GPCCEDV — Gauging Parameter Calculator for CEDV gauges

Gauging Parameter Calculator (GPC) is a math calculation and simulation tool that helps the battery designer to obtain matching Compensated End of Discharge Voltage (CEDV) coefficients for the specific battery profile. The tool allows the user to increase the accuracy of the fuel gauge IC over (...)
Support software

MATHCAD_CEDV_SOFTWARE — MathCAD compensated end of discharge voltage (CEDV) tool

Math calculation and simulation tool that helps the battery designer to obtain matching CEDV coefficients for the specific chemistry in the battery pack using one of TI’s CEDV algorithm based fuel gauge. It accepts 3 pairs of log files that can be created by using TI’s bq Smart Battery (...)
Support software

bqEVSW Setup 00.09.80

SLUC300.ZIP (5957 KB)
Calculation tool

GAUGEPARCAL Gauging Parameter Calculator

Gauging Parameter Calculator (GPC) is a math calculation and simulation tool that helps the battery designer to obtain matching Compensated End of Discharge Voltage (CEDV) coefficients for the specific battery profile. The tool allows the user to increase the accuracy of the fuel gauge IC over (...)
CAD/CAE symbol

MathCAD CEDV Software MathCAD CEDV Software

Package Pins Download
SON (DRZ) 12 View options

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  • Ongoing reliability monitoring

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