BQ27520-G4 - Texas Instruments

BQ27520-G4 System-Side Impedance Track Fuel Gauge

• Single-series cell Li-ion battery fuel gauge resides on system board – Integrated 2.5 VDC LDO – External low-value 10-mΩ sense resistor • Patented Impedance Track™ technology – Adjusts for battery aging, self-discharge, temperature, and rate changes – Reports remaining capacity, state-of-charge (SOC), and time-to-empty – Optional smoothing filter – Batter.

Features

3 Description
• Single-series cell Li-ion battery fuel gauge resides on system board
  – Integrated 2.5 VDC LDO
  – External low-value 10-mΩ sense resistor
• Patented Impedance Track™ technology
  – Adjusts for battery aging, self-discharge, temperature, and rate changes
  – Reports remaining capacity, state-of-charge (SOC), and time-to-empty
  – Optional smoothing filter
  – Battery state-of-health (aging) estimation
  – Supports embedded or removable packs with up to 14500-mAh capacity
  – Accommodates pack swapping with two separate battery profiles
• Microcontroller peripheral supports
  – 400-kHz I2C ser.