• Single Series Cell Li-Ion Battery Fuel Gauge

• Resides on System Board

• Supports Embedded or Removable Batteries

• Powered Directly from Battery with Integrated LDO

• Supports a Low-Value External Sense Resistor (10 mΩ)

• 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

• Microcontroller Peripheral Supports:

• 400-kHz I2C Serial Interface

• Configurable SOC Interrupt or BatteryLow Digital Output Warning

• Internal Temperature Sensor or Host-Reported Temperature

The Texas Instruments bq27441-G1 fuel gauge is a microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires minimal user configuration and system microcontroller firmware development.

The bq27441-G1 battery 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).

Battery fuel gauging with the bq27441-G1 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny, 12-pin, 2.50 mm × 4.00 mm, small outline no-lead (SON) package is ideal for space-constrained applications.