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.