SLUSB85E May 2013 – January 2016
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.
|PART NUMBER||PACKAGE||BODY SIZE (NOM)|
|bq27421-G1||YZF (9)||1.62 mm × 1.58 mm|
Changes from D Revision (July 2015) to E Revision
Changes from C Revision (December 2014) to D Revision
Changes from B Revision (November 2014) to C Revision