Описание
The Texas Instruments bq27520-G3 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires little system microcontroller firmware development. The bq27520-G3 resides on the system’s main board and manages an embedded battery (non-removable) or a removable battery pack.The bq27520-G3 uses the patented Impedance Track algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (min), battery voltage (mV), temperature (°C) and state of health (%).Battery fuel gauging with the bq27520-G3 requires only PACK+ (P+), PACK– (P–), and optional Thermistor (T) connections to a removable battery pack or embedded battery circuit. The CSP option is a 15-ball package in the with 0,5 mm lead pitch. It is ideal for space constrained applications.
- Battery Fuel Gauge for 1-Series Li-Ion Applications up to 32-Ahr capacity
- Resides on System Main Board
- Works With Embedded or Removable Battery Packs
- Uses PACK+, PACK–, and T Battery Terminals
- Microcontroller Peripheral Provides:
- Accurate Battery Fuel Gauging
- Internal Temperature Sensor for Battery Temperature Reporting
- Battery Low Interrupt Warning
- Battery Insertion Indicator
- Configurable Level of State of Charge (SOC) Interrupts
- State of Health Indicator
- Current Data Logging Buffer
- 32 Bytes of Non-Volatile Scratch-Pad FLASH
- Battery Fuel Gauge Based on Patented Impedance Track Technology
- Models the Battery Discharge Curve for Accurate Time-to-Empty Predictions
- Automatically Adjusts for Battery Aging, Battery Self-Discharge, and Temperature/Rate Inefficiencies
- Low-Value Sense Resistor (10 mO or Less)
- 400-kHz I2C Interface for Connection to System Microcontroller Port
- In a 15-Pin NanoFree (CSP) Packaging
