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Texas Instruments bq25882 Boost-Mode Battery Charger

Texas Instruments bq25882 Boost-Mode Battery Charger is a highly-integrated 2A switch-mode battery charge management and system power path management device for dual-cell Li-Ion and Li-polymer batteries. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.

Features

  • High-Efficiency 2A, 1.5MHz Switch Mode Boost Charger
    • 92.5% Charge Efficiency at 7.6V Battery, 1A Charge
    • Optimized for USB Input and 2-Cell Li-Ion Output
    • Selectable Low Power PFM Mode for Light Load Operation with Out-of-Audio Option
  • USB On-the-Go (OTG) with Adjustable Output from 4.5V to 5.5V
    • Buck Converter with up to 2A Output
    • 94.5% Efficiency at 5V, 1A Output
    • Accurate Constant Current (CC) Limit
    • Output Short Protection
    • Selectable Low Power PFM Mode for Light Load Operation with Out-of-Audio Option
  • Single Input to Support USB Input Adapters
    • Supports 3.9V to 6.2V Input Voltage Range with 20V Absolute Maximum Input Voltage Rating
    • Input Current Limit (500mA to 3.3A with 100mA resolution) to Support USB2.0, USB3.0 Standard Adapters
    • Maximum Power Tracking by Input Voltage Limit up to 5.5V
    • Auto-Detect USB SDP, CDP, DCP, and Non-Standard Adapters
  • Input Current Optimizer (ICO) to Maximize Input Power without Overloading Adapters
  • Highest Battery Discharge Efficiency with 15-mΩ Battery Discharge MOSFET
  • Integrated ADC for System Monitoring (BUS Voltage and Current, BAT Voltage, Charge Current, SYS Voltage, and NTC and Die Temperature)
  • Narrow VDC (NVDC) Power Path Management
    • Instant-on Works with No Battery or Deeply Discharged Battery
    • Ideal Diode Operation in Battery Supplement Mode
  • Flexible Autonomous and I2C Mode for Optimal System Performance
  • High Integration includes all MOSFETs, Current Sensing and Loop Compensation
  • High Accuracy
    • ±0.4% Charge Voltage Regulation
    • ±7.5% Charge Current Regulation
    • ±7.5% Input Current Regulation
  • Safety
    • Battery Temperature Sensing in Charge and OTG Buck Mode
    • Thermal Regulation and Thermal Shutdown

Applications

  • Wireless Speaker
  • Digital Camera (DSC, DVC)
  • Mobile Printer
  • Tablet
  • Electronic Point of Sales (ePOS)
  • Portable Electronic Devices

Simplified Schematic

Schematic - Texas Instruments bq25882 Boost-Mode Battery Charger

TI Reference Designs Library

TI Reference Designs - Texas Instruments bq25882 Boost-Mode Battery Charger

TI Reference Designs Library

Publié le: 2018-08-28 | Mis à jour le: 2023-04-19