The Texas Instruments bq27421-G1 fuel gauge is a minimally configured microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires very little user configuration and system microcontroller firmware development.
The bq27421-G1 fuel gauge uses the patented Impedance TrackTM 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 bq27421-G1 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny 9-ball, 1.62 mm × 1.58 mm, 0.5-mm pitch NanoFree™ chip scale package (DSBGA) is ideal for space-constrained applications.
|Number of Series Cells|
|Battery Capacity (Max) (mAh)|
|Battery Capacity (Min) (mAh)|
|External Capacity Indication|
|Gas Gauge Algorithm|
|Operating Temperature Range (C)|
|Single Cell||Single Cell||Single Cell|
|Impedance Track||Impedance Track||Impedance Track|
|Integrated Sense Resistor||N/A||N/A|
|-40 to 85||-40 to 85||-40 to 85|
|Order Now||Order Now||Order Now|