Description：

The Texas Instruments (TI) bq27441‑G1 fuel gauge is a microcontroller peripheral that provides system‑side fuel gauging for single‑cell Li‑ion batteries. This device requires minimal user configuration and system microcontroller firmware development. The bq27441‑G1 battery fuel gauge utilizes the patented Impedance Track™ algorithm for fuel gauging, delivering key information such as remaining capacity (mAh), state of charge (%), and battery voltage (mV). Fuel gauging with the bq27441‑G1 is accomplished by simply connecting PACK+ (P+) and PACK‑ (P‑) to a removable battery pack or embedded battery circuit. Housed in a tiny 12‑pin 2.50mm × 4.00mm SON (Small Outline No‑Lead) package, this device is an ideal solution for space‑constrained applications.

Features:

Single‑series Li‑ion battery fuel gauge resides on the system motherboard

Supports embedded or removable batteries

Powered directly by the battery with an integrated LDO (Low‑Dropout Regulator) for fuel gauging

Supports low‑value external sense resistor (10mΩ)

Battery fuel gauging based on patented Impedance Track™ technology

Reports remaining capacity and state of charge (SOC) with a smoothing filter

Automatically adjusts for battery aging, temperature, and rate changes

Battery state‑of‑health (aging) estimation

Microcontroller peripheral support:

400kHz I²C serial interface

Configurable SOC interrupt or battery low‑level digital output alarm

Internal temperature sensor or host‑reported temperature

Applications:

Smartphones, feature phones, and tablets

Digital cameras and video camcorders

Handheld terminals

MP3 or multimedia players