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1 Features

1? 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

Inefficiencies

– 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

System

– 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

Termination

– 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

2 Applications

? Smartphones, Feature Phones, and Tablets

? Digital Still and Video Cameras

? Handheld Terminals

? MP3 or Multimedia Players

3 Description

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 (nonremovable)

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-ofhealth

(%).