The bq34210-Q1 1-Series Cell System-Side CEDV Fuel Gauge provides fuel gauging andEnd-of-Service (EOS) Determination for 1-series cell batteries in applications that encounterinfrequent discharge, such as eCall systems and uninterruptible power supplies (UPS) for backupduring power failures, where batteries may stay connected to a charging power source most of theirlifetime until needed. The bq34210-Q1 fuel gauge supports multiple battery chemistries, includingLi-Ion, LiFePO4, and NiMH.
The gas gauging function uses voltage, current, and temperature data along withCompensated End-of-Discharge (CEDV) technology to provide State-of-Charge (SOC) and State-of-Health(SOH) data. The device’s EOS Determination function alerts when battery capability has degraded andis 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.
Feature
- 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 m)
- 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 I2C Serial Interface
- Configurable Interrupt (ALERT) for SOC, Battery Levels, Temperature Faults, and Charge/Discharge Status
