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

(%).