bq27320 Overview
The Texas Instruments single-cell bq27320 battery fuel gauge requires very minimal configuration and system microcontroller firmware development, leading to quick system bring-up. The bq27320 uses the pensated End-of-Discharge Voltage (CEDV) gas gauging algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), runtime-to-empty (min), battery voltage (mV), temperature (°C) and state-ofhealth (%). Configurable interrupts help save system power and free up the host from continuous polling. Accurate temperature sensing is supported via an external thermistor. Battery fuel gauging with the bq27320 requires only PACK+ (P+), PACK– (P–), and optional thermistor (T) connections to a removable battery pack or embedded battery circuit. The device uses a 15-ball NanoFree™ (DSBGA) package. It is ideal for spaceconstrained
bq27320 Key Features
- 1 Battery Fuel Gauge For System-/Pack-Side Configuration
- pensated End-of-Discharge Voltage (CEDV) Gauging Technology
- Adjusts for Battery Aging, Self-Discharge, Temperature, and Rate Changes
- Reports Remaining Capacity, State-of-Charge (SOC), and Time-to-Empty with Smoothing Filter
- Battery State-of-Health Estimation
- Supports Embedded or Removable Packs from 100-mAhr to 14,500-mAhr Capacity
- Acmodates Pack Swapping with up to Four Separate Battery Profiles
- Supports a Raw Coulomb Counter To Provide Delta Capacity Information
- Microcontroller Peripheral Supports
- SDQ munication Interface for Authentication ID