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BQ27220 ACTIVE Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles

Low power consumption, battery state-of-health (aging) estimates, internal temperature sensor

Product details

Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface I2C Battery capacity (Min) (mAh) 200 Battery capacity (Max) (mAh) 8000 Implementation Pack External capacity indication None Features Impedance Track™ algorithm Operating temperature range (C) -40 to 85
Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface I2C Battery capacity (Min) (mAh) 200 Battery capacity (Max) (mAh) 8000 Implementation Pack External capacity indication None Features Impedance Track™ algorithm Operating temperature range (C) -40 to 85
VSON (DRZ) 12 10 mm² 2.5 x 4
  • Single-Cell Li-Ion Battery Fuel Gauge
    • Resides in Battery Pack
    • Low-Value External Sense Resistor
      (10 mΩ Typical)
    • One Time Programmable (OTP) Configuration Non-Volatile Memory (NVM)
    • Powered Directly from Battery with Integrated LDO
    • 400-kHz I2C™ Serial Interface
    • Internal Temperature Sensor or
      Host-reported Temperature
  • Battery Fuel Gauging Based on Patented Impedance Track™ Technology
    • Reports Remaining Capacity and State of Charge (SOC) with Smoothing Filter
    • Automatically Adjusts for Battery Aging, Self-discharge, Temperature, and Rate Changes
    • Battery State of Health (Aging) Estimation
  • Single-Cell Li-Ion Battery Fuel Gauge
    • Resides in Battery Pack
    • Low-Value External Sense Resistor
      (10 mΩ Typical)
    • One Time Programmable (OTP) Configuration Non-Volatile Memory (NVM)
    • Powered Directly from Battery with Integrated LDO
    • 400-kHz I2C™ Serial Interface
    • Internal Temperature Sensor or
      Host-reported Temperature
  • Battery Fuel Gauging Based on Patented Impedance Track™ Technology
    • Reports Remaining Capacity and State of Charge (SOC) with Smoothing Filter
    • Automatically Adjusts for Battery Aging, Self-discharge, Temperature, and Rate Changes
    • Battery State of Health (Aging) Estimation

The Texas Instruments bq27411-G1 device is a battery fuel gauging solution for single-cell Li-Ion battery packs. The device requires minimal configuration and uses One Time Programmable (OTP) Non-Volatile Memory (NVM) to avoid an initialization download by the system processor.

The fuel gauge uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).

The small, 12-pin, 2.50 mm × 4.00 mm, Small Outline No-Lead (SON) package is ideal for space-constrained applications.

The Texas Instruments bq27411-G1 device is a battery fuel gauging solution for single-cell Li-Ion battery packs. The device requires minimal configuration and uses One Time Programmable (OTP) Non-Volatile Memory (NVM) to avoid an initialization download by the system processor.

The fuel gauge uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).

The small, 12-pin, 2.50 mm × 4.00 mm, Small Outline No-Lead (SON) package is ideal for space-constrained applications.

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Technical documentation

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Type Title Date
* Data sheet bq27411-G1 Single-Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration datasheet (Rev. D) PDF | HTML 02 Jan 2016
Application note Method for TI Gauge to Avoid SOC Jump on Smart Phone Application 25 Feb 2022
Application note Enhanced Resolution Gauging for Low Current Applications Using Scaling 26 Oct 2016
User guide bq27411EVM System-Side Impedance Track Fuel Gauge (Rev. A) 31 Jul 2016
User guide bq27411-G1 Technical Reference Manual (Rev. B) 05 Jun 2015
Technical article Where’s the gauge? Part 3 11 Feb 2015

Design & development

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

Evaluation board

BQ27411EVM-G1C — BQ27411EVM-G1C Pack-Side Impedance Track™ Fuel (Gas) Gauge Evaluation Module

The BQ27411EVM-G1C Pack-Side Impedance Track™ Fuel (Gas) Gauge evaluation module is a complete evaluation system for the bq27411-G1C. The EVM includes one bq27411-G1C circuit module with external current-sense resistor.  The bq27411-G1C should be used with batteries that have a 4.35 V (...)

User guide: PDF
Not available on TI.com
Evaluation board

BQ27441EVM-G1A

BQ27441 evaluation board 

The BQ27441EVM-G1A evaluation module is a complete evaluation system for the bq27441-G1A. The EVM includes one bq27441-G1A circuit module with external current-sense resistor. The bq27441-G1A should be used with batteries that have a 4.2 V charge voltage. A separate orderable EV2300 or EV2400 PC (...)
User guide: PDF
Not available on TI.com
Evaluation board

BQ27441EVM-G1B

BQ27441 evaluation board 

The BQ27441EVM-G1B evaluation module is a complete evaluation system for the bq27441-G1B. The EVM includes one bq27441-G1B circuit module with an external current-sense resistor. The bq27441-G1B should be used with batteries that have a 4.3 or 4.35 V charge voltage. A separate orderable EV2400 PC (...)
User guide: PDF
Not available on TI.com
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 (...)
Support software

BQ27411-G1 Smart Flash Files (Rev. A)

SLUC561A.ZIP (3000 KB)
Reference designs

TIDA-00241 — Pack-Side Impedance Track Fuel Gauge

The Texas Instruments bq27411-G1 reference design is an easy to configure fuel gauging solution for single series cell Li-Ion battery packs. The device requires minimal configuration and uses One Time Programmable (OTP) Non-Volatile Memory (NVM) to avoid an initialization download by the system (...)
Test report: PDF
Schematic: PDF
Package Pins Download
SON (DRZ) 12 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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