BQ27425-G1 System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection | Gas Gauge Battery | TI.com

BQ27425-G1 (NRND) System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection | Gas Gauge Battery

 

Description

The Texas Instruments bq27425 system-side LiCoO2 battery fuel gauge is an easy to configure microcontroller peripheral that provides fuel gauging for single-cell LiCoO2 battery packs. The device requires minimal user configurations and system microcontroller firmware development for accurate fuel gauging.

The bq27425 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).

Battery fuel gauging with the bq27425 requires only PACK+ (P+), PACK– (P–), for a removable battery pack or embedded battery circuit. The 15-pin 2,69 × 1,75 mm, 0.5 mm pitch CSP package is ideal for space constrained applications.

Features

  • Battery Fuel Gauge for 1-Series LiCoO2 battery Applications
  • Easy to Configure Battery Fuel Gauging Based on Patented Impedance Track Technology
    • Models Battery Discharge Curve for Accurate State-of-Charge Report
    • Automatically Adjusts for Battery Aging, Battery Self-Discharge, and
      Temperature/Rate Inefficiencies
    • Low-Value Integrated Sense Resistor
      (10 mΩ typical)
  • Resides on System Main Board
    • Works with Embedded or Removable Battery Packs
    • Integrated LDO allows devices to be powered directly from battery pack
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for Battery Temperature Reporting
    • Configurable Level of State-of-Charge (SOC) Interrupts
  • I2C for Connection to System Microcontroller Port
  • Small 15-pin 2,69 × 1,75 mm, 0.5 mm pitch CSP package