bq27532-G1 Battery Management Unit

By Texas Instruments 136

bq27532-G1 Battery Management Unit

Texas Instruments' bq27532-G1 system-side, Li-Ion battery management unit is a microcontroller peripheral that provides Impedance Track™ fuel gauging and charging control for single-cell Li-Ion battery packs. The fuel gauge requires little system microcontroller firmware development. Together with bq2425x single-cell switch-mode charger, the fuel gauge manages an embedded battery (non-removable) or a removable battery pack.

The fuel gauge uses the patented Impedance Track algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), runtime to empty (minimum), battery voltage (mV), temperature (°C), and SoH (%). 

Applications include Smartphones, feature phones, tablets, digital still and video cameras, handheld terminals, MP3 or multimedia players.

Features  
  • Battery fuel gauge and charger controller for 1-series Li-Ion applications up to 14,500 mAh capacity
  • Resides on system main board
  • Battery fuel gauge based on patented Impedance Track™ technology
    • Models the battery discharge curve for accurate remaining capacity predictions
    • Automatically adjusts for battery aging, battery self-discharge, and temperature and rate inefficiencies
    • Low-value sense resistor (5 to 20 mΩ)
  • Battery charger controller with customizable charge profiles
    • Configurable charge voltage and current based on temperature
    • Optional State of Health (SoH) and multi-level based charge profiles
  • Stand-alone battery charger controller for bq2425x single-cell switch-mode battery charger
  • Host-free autonomous battery management system
    • Reduced software overhead allows for easy portability across platforms and shorter OEM design cycles
    • Higher safety and security
  • Runtime improvements
    • Longer battery runtime leveraging Impedance Track™ technology
    • Tighter accuracy controls for charger termination
    • Improved recharge thresholds
  • Intelligent charging – customized and adaptive charging profiles
    • Charger control based on SoH
    • Temperature Level Charging (TLC)
  • 400 kHz I²C interface for connection to system microcontroller port

New Products:

BQ27532YZFT-G1

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