bq27350 - Texas Instruments

bq27350 Single Cell Li-Ion/Li-Polymer Battery Manager

The Texas Instruments’ bq27350 is a battery fuel gauge with secure authentication support for single cell Li-Ion/Li-Polymer battery packs. Designed for battery pack integration, the device requires little host microcontroller firmware support for implementation. The system host processor communicates with the bq27350 over an I2C interface to obtain remaining.

Features

•12 Comprehensive Battery Fuel Gauge for Single Cell and 1-Series Li-Ion/Li-Polymer Applications
• Secure Battery Authentication Using SHA-1/HMAC Encryption
• Calculates and Reports
  – Remaining Battery Capacity
  – Battery Voltage and Temperature
  – Charge and Discharge Current
  – Four Time-to-Empty Predictions
• 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 (10mΩ or Less)
• 9.