BQ27220YZFR

BQ27220YZFR is a single-cell CEDV fuel gauge in a DSBGA-9 (YZF) chip-scale package, reporting remaining capacity over I2C for packs from 100 mAh to 32000 mAh. Typical current draw is 50 µA in NORMAL mode and 9 µA in SLEEP, so gauging does not materially shorten standby time, and the operating range is -40 C to +85 C. For product teams, a dependable state-of-charge readout reduces unexpected shutdowns, supports smarter charge and power policies, and improves the user experience in wearables, handheld terminals and IoT nodes where the battery is not removable. The CEDV algorithm also avoids the learning cycles that more complex gauges need, which simplifies production calibration on the line. Selection advice: pick the YZFR code when board area is at a premium and a single-cell CEDV gauge is enough; designs that need impedance-based accuracy across ageing and temperature extremes should step up to an Impedance Track gauge instead. Match the full YZFR code to your footprint and assembly process. Parameters verified against Texas Instruments documentation.