BQ25883

• High-efficiency 2-A, 1.5MHz switch mode boost charger
  • 93.4% Charge efficiency at 5V adapter, 7.6-V battery, 1-A charge
  • Optimized for USB input and 2-cell Li-Ion battery
  • Selectable low power PFM mode for light load operation
• Single input to support USB input adapters
  • Supports 3.9 V – 6.2 V input voltage range with 20-V absolute maximum input voltage rating
  • Input current limit (500 mA to 3.3 A with 100-mA resolution) to support USB2.0, USB3.0 standard adapters
  • Maximum power tracking by input voltage limit up-to 5.5 V
  • Integrated USB D+/D- auto-detect USB SDP, CDP, DCP, and non-standard adapters
• Power path management and I²C control
  • Highest battery discharge efficiency with 17mΩ battery discharge MOSFET
  • Narrow VDC (NVDC) power path management
    • Instant-on system on with no battery or deeply discharged battery
    • Ideal diode operation in battery supplement mode
• USB on-the-go (OTG) with adjustable output from 4.5V to 5.5V
  • Buck converter with up-to 2 A output
  • 94% Efficiency at 5 V, 1 A output
  • Accurate constant current (CC) regulation and output short protection
  • Selectable low power PFM mode for light load operation with out-of-audio option
• Input current optimizer (ICO) to maximize input power without overloading adapters
• Integrated 16-bit ADC for system monitoring (BUS voltage and current, each cell voltage, charge current, SYS voltage, and NTC and die temperature)
• High integration includes all MOSFETs, current sensing and loop compensation
• High accuracy
  • ±0.5% Charge voltage regulation
  • ±5% Charge current regulation
  • ±7.5% Input current regulation
• Safety
  • Battery temperature sensing in charge and OTG buck mode
  • Thermal regulation and thermal shutdown

The BQ25883 is a highly-integrated 2-A boost switch-mode battery charge management and system power path management device for 2-cell (2s) Li-Ion and Li-polymer battery. The BQ25883 has I²C control with OTG and power path.