1 Features

1• 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, Selfdischarge,

Temperature, and Rate Changes

– Battery State of Health (Aging) Estimation

2 Applications

• Smartphones, Feature Phones, and Tablets

• Digital Still and Video Cameras

• Handheld Terminals

• MP3 or Multimedia Players

3 Description

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 spaceconstrained

applications.