Battery Power Management IC Multi-Chemistry 14-TSSOP The bq34210-Q1 1-Series Cell System-Side CEDV Fuel Gauge provides fuel gauging and End-of-Service (EOS) Determination for 1-series cell batteries in applications that encounter infrequent discharge, such as eCall systems and uninterruptible power supplies (UPS) for backup during power failures, where batteries may stay connected to a charging power source most of their lifetime until needed. The bq34210-Q1 fuel gauge supports multiple battery chemistries, including Li-Ion, LiFePO4, and NiMH. The gas gauging function uses voltage, current, and temperature data along with Compensated End-ofDischarge (CEDV) technology to provide State-ofCharge (SOC) and State-of-Health (SOH) data. The device's EOS Determination function alerts when battery capability has degraded and is approaching the end of its usable service. Battery fuel gauging with the bq34210-Q1 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery management system. Features 1• Automotive-Qualified AEC-Q100, Grade 3 • 1-Series Cell Battery Fuel Gauge Supports Li-Ion, LiFePO4, and NiMH (3-Cell) Chemistries – Resides on System Board – Powers Directly from the Battery with Integrated LDO – Supports a Low-Value External Sense Resistor (10 mΩ) • Learning Load Enable (LEN) from Host • Ultra-Low Power Consumption in NORMAL (50 µA) and SLEEP (9 µA) Modes • Supports Replacement Batteries • Accurate End-of-Service (EOS) Determination for Batteries in Rarely Discharged Applications • CEDV Gas Gauge for 1-Series Cell Batteries, Providing: – State-of-Charge (SOC) – Time-to-Empty (TTE) – State-of-Health (SOH) • High-Side and Low-Side Current Sensing Options • Internal Temperature Sensor OR External Thermistor • Microcontroller Peripheral Interface Supports: – 400-kHz I 2C™ Serial Interface – Configurable Interrupt (ALERT) for SOC, Battery Levels, Temperature Faults, and Charge/Discharge Status 2 Applications • eCall Systems • Telematics Backup Systems • Uninterruptible Power Supply (UPS) Backup Systems • Emergency Battery Power Modules #BatteryFuelGauge #BatteryManagement #FuelGaugeIC #AutomotiveElectronics #TexasInstruments #LiIonBattery #LiFePO4 #I2C #PowerManagement #AECQ100 #BackupBattery #UPS #EmbeddedSystems

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