bq27220 - Texas Instruments

bq27220 Single-Cell CEDV Fuel Gauge

The Texas Instruments bq27220 battery fuel gauge is a single-cell gauge that requires minimal userconfiguration and system microcontroller firmware development, leading to quick system bring-up. The bq27220 device uses the Compensated End-ofDischarge Voltage (CEDV) algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh),.

Features

•1 Single-Cell Li-Ion Battery Fuel Gauge
  – Resides in Pack or on System Board
  – Supports Embedded or Removable Batteries
  – Powers Directly from Battery with Integrated LDO
  – Supports a Low-Value (10-mΩ) External Sense Resistor
• Ultra-Low Power Consumption in NORMAL (50 µA) and SLEEP (9 µA) Modes
• Battery Fuel Gauging Based on Compensated End-of-Discharge Voltage (CEDV) Technology
  – Reports Remaining Capacity and State-ofCharge (SOC) with Smoothing Filter
  – Adjusts Automatically for Battery Aging, SelfDischarge, Temperature, and Rate Changes
  – Provides Battery State-of-Health (Aging) Estimati.