bq27411-G1 Single-Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration

1 Features

• 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, Self-discharge, 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 space-constrained applications.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

4 Revision History

Changes from C Revision (September 2015) to D Revision

• Changed Simplified Schematic Go
• Changed Pin Functions PROG description Go
• Changed Figure 5 Go
• Changed Figure 6 Go
• Changed Power Supply Decoupling Go
• Changed Layout Guidelines Go
• Changed Figure 10 Go

5 Device Comparison Table