Product details


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 Battery Management Unit, SHA-1 Authentication Operating temperature range (C) -40 to 85 Cell balancing open-in-new Find other Battery fuel gauges

Package | Pins | Size

DSBGA (YZF) 15 5 mm² 2.65 x 1.996 open-in-new Find other Battery fuel gauges


  • Battery Fuel Gauge and Charger Controller for 1-
    Cell Li-Ion Applications
  • Resides on System Main Board
  • 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
    • Low-Value Sense Resistor (5 mΩ to 20 mΩ)
  • Battery Charger Controller with Customizable
    Charge Profiles
    • Configurable Charge Voltage and Current
      based on Temperature
    • Optional State-Of-Health (SOH) and Multi-
      Level Based Charge Profiles
  • Host Free Autonomous Battery Management
    • Reduced Software Overhead Allows for Easy
      Portability Across Platforms and Shorter OEM
      Design Cycles
    • Higher Safety and Security
  • Run Time Improvements
    • Longer Battery Runtime Leveraging
      Impedance Track Technology
    • Tighter Accuracy Controls for Charger
    • Improved Recharged Thresholds
  • Intelligent Charging—Customized and Adaptive
    Charging Profiles
    • Charger Control Based on SOH
    • Temperature Level Charging (TLC)
  • Battery Charger Controller for bq2416x Single Cell
    Switchmode Battery Charger
    • Stand-Alone Charging Solution
  • 400-kHz I2C™ Interface for Connection to System
    Microcontroller Port
  • In a 15-Pin NanoFree™ Packaging
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The Texas Instruments bq27530-G1 system-side Li-Ion Battery Management Unit is a microcontroller peripheral that provides Impedance Track™ fuel gauging and charging control for single-cell Li-Ion battery packs. The device requires little system microcontroller firmware development. Together with bq2416x Single-Cell Switchmode Charger, the bq27530-G1 manages an embedded battery (non-removable) or a removable battery pack.

The bq27530-G1 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), runtime-to-empty (min), battery voltage (mV), temperature (°C), and state-of-health (%).

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Technical documentation

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Type Title Date
* Data sheet bq27530-G1 Battery Management Unit Impedance Track™ Fuel Gauge with MaxLife Technology for Use with the bq2416x Charger Controller datasheet (Rev. C) Mar. 17, 2016
User guide bq27530EVM with bq27530 Battery Management Unit Impedance Track Fuel Gauge (Rev. B) Jul. 31, 2016
Application note Host System Calibration Method (Rev. B) May 19, 2016
Application note Going to Production With the bq275xx (Rev. F) Oct. 09, 2014
Application note Using I2C Communication With the bq275xx Series of Fuel Gauges (Rev. B) May 15, 2014
Application note Going to Production With the bq275xx (Rev. E) Jan. 20, 2012
Application note Thermistor Selection Guide for Texas Instruments Advanced Fuel Gauges Sep. 28, 2011
Application note How to Do Calibration and Create Golden DFI for Host Side Gas Gauge Sep. 01, 2011
Application note WinCE/Linux Drivers for bq275xx Fuel Gauge Mar. 17, 2011
Application note Updating bq275xx Firmware at Production (Rev. A) Feb. 21, 2011
Application note How to Generate Golden Image for Single-Cell Impedance Track(TM) Devices Jan. 07, 2010
Application note Improving Battery Safety, Charging, and Fuel Gauging in Portable Media Apps Mar. 11, 2009
Application note Single Cell Gas Gauge Application Book Jul. 28, 2008
Application note Impedance Track Fuel Gauge Accuracy Test for GSM Phone Applications Mar. 21, 2008
Application note Single Cell Gas Gauge Circuit Design Feb. 22, 2008
Application note Single Cell Impedance Track Printed-Circuit Board Layout Feb. 22, 2008
Application note Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm Jan. 31, 2008
Application note Host-Side Gas-Gauge-System Design Considerations for Single-Cell Handheld Apps Oct. 12, 2007

Design & development

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

Hardware development

document-generic User guide
  • Stand-alone gauge and charger providing optimal charging solution
  • IN input operating range of 4.2 V – 10 V
  • USB input operating range of 4.2 V – 6 V
  • LED indication for status signals
  • Test points for key signals available for testing purposes.

Software development

Linux Driver for BQ27XXX
BQ27XXXSW-LINUX The Linux driver supports the BQ27x series of Battery Fuel Gauges. The Linux driver supports communication through the I2C/HDQ bus and interfaces with the power supply sub-system to monitor battery properties.


Linux Mainline Status

Available in Linux Main line: Yes
Available through N/A


SLUC606.ZIP (4083 KB)
SLUC367C.ZIP (63861 KB)
SLUC415.ZIP (47 KB)
SLUC416.ZIP (7403 KB)

Reference designs

System-Side ImpedanceTrack Fuel (Gas) Gauge Direct Battery Connection Reference Design
TIDA-00029 This reference design, using bq27530, has a bq27530-G1 fuel gauge that directly communicates with bq24160/1 single-cell, Li-Ion battery charger via the I2C protocol. This complete battery charging solution does not require a microcontroller or processor to facilitate communication between the (...)
document-generic Schematic document-generic User guide
2.5A Dual-Input Single Cell Switchmode Li-Ion Battery Charger with Power Path Reference Design
TIDA-00047 This reference design is a complete charger solution for evaluating compact, flexible, high-efficiency, USB-friendly, switch-mode charge management solution for single-cell, Li-ion and Li-polymer batteries used in a wide range of portable applications. The solution integrates a synchronous PWM (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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DSBGA (YZF) 15 View options

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