1 Features

1• Single Series Cell Li-Ion Battery Fuel Gauge

– Resides on System Board

– Supports Embedded or Removable Batteries

– Powered Directly from Battery with Integrated

LDO

– Supports a Low-Value External Sense Resistor

(10 mΩ)

• 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

• Microcontroller Peripheral Supports:

– 400-kHz I2C Serial Interface

– Configurable SOC Interrupt or

Battery Low Digital Output Warning

– Internal Temperature Sensor or

Host-Reported Temperature

2 Applications

• Smartphones, Feature Phones, and Tablets

• Digital Still and Video Cameras

• Handheld Terminals

• MP3 or Multimedia Players

3 Description

The Texas Instruments bq27441-G1 fuel gauge is a

microcontroller peripheral that provides system-side

fuel gauging for single-cell Li-Ion batteries. The device requires minimal user configuration and

system microcontroller firmware development.

The bq27441-G1 battery 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).

Battery fuel gauging with the bq27441-G1 fuel gauge

requires connections only to PACK+ (P+) and PACK–

(P–) for a removable battery pack or embedded battery circuit. The tiny, 12-pin, 2.50 mm × 4.00 mm,

small outline no-lead (SON) package is ideal for

space-constrained applications.