• Battery Switching Charger, WLED Driver, and
  Current Shunt Monitor in a Single Package
• Battery Charger
  • Charges Faster Than Linear Chargers
  • High-Accuracy Voltage and Current Regulation
    • Input Current Regulation Accuracy: ±5%
      (100 mA, 500 mA)
    • Charge Voltage Regulation Accuracy:
      ±0.5% (25°C)
      ±1% (0 - 125°C)
    • Charge Current Regulation Accuracy: ±5%
  • Bad Adaptor Detection and Rejection
  • Safety Limit Register for Maximum Charge
    Voltage and Current Limiting
  • High-Efficiency Mini-USB/AC Battery Charger
    for Single-Cell Li-Ion and Li-Polymer Battery
    Packs
  • Built-In Input Current Sensing and Limiting
  • Integrated Power FETs for Up to 1.25-A
    Charge Rate
  • Programmable Charge Parameters through I²C
    Interface (Up to 400 Kbps):
    • Input Current
    • Fast-Charge/Termination Current
    • Charge Voltage (3.5 V – 4.44 V)
    • Safety Timer
    • Termination Enable
  • Synchronous Fixed-Frequency PWM
    Controller Operating at 3 MHz With 0% to
    99.5% Duty Cycle
  • Safety Timer With Reset Control
  • Reverse Leakage Protection Prevents Battery
    Drainage
  • Thermal Regulation and Protection
  • Input/Output Overvoltage Protection
  • Automatic Charging
  • Boost Mode Operation for USB OTG
    • Input Voltage Range (VSYS): 2.5 V to
      4.5 V
    • Output Voltage for VBUS: 5 V
• WLED Driver
  • 35-V Open LED Protection for Up to 8 LEDs
  • 200-mV Reference Voltage With ±2%
    Accuracy
  • Built-In Soft Start for WLED Boost
  • Up to 90% Efficiency
• Current Shunt Monitor
  • Fixed Gain of 25 V/V
  • Input Referred Offset Voltage Less Than
    ±40 µV Typical Enables Use of Shunt
    Resistors as Low as 20 mΩ
  • Buffered Reference Voltage
• Package
  • 36-Ball, 0.4-mm Pitch DSBGA Package
• APPLICATIONS
  • Mobile Phones and Smart Phones
  • MP3 Players
  • Portable Navigation Devices
  • Handheld Devices

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