300 mA One-Cell Lithium-ion/Polymer Battery Charger

概览

NCP1835B is an integrated linear charger specifically designed to charge 1-cell Li-Ion batteries with a constant current, constant voltage (CCCV) profile.
Its low input voltage capability, adjustable charge current, ability to maintain regulation without a battery, and its onboard thermal foldback make it versatile enough to charge from a variety of wall adapters. The NCP1835B can charge from a standard wall adapter or from the USB port. It has been optimized to charge low capacity batteries such as those found in wireless headsets and flash memory-based MP3 players. The recommended charge current rate is 30-300 mA.

  • Wireless Headsets
  • Bluetooth Devices
  • MP3 Players
  • USB Appliances
  • Integrated Voltage and Current Regulation
  • No External MOSFET, Sense Resistor or Blocking Diode Required
  • Charge Current Thermal Foldback
  • Integrated Precharge Current for Conditioning a Deeply Discharged Battery
  • Integrated End of Charge (EOC) Detection
  • 1% Voltage Regulation
  • 4.2 V Regulated Output Voltage
  • Regulation Maintained without a Battery Present
  • Programmable Full Charge Current
  • Open Drain Charge Status and Fault Alert Flags
  • 2.8 V Output for AC Present Indication and Powering Charging Subsystems
  • Minimum Input Voltage of 2.4 V Allows Use of Current Limited Adapters
  • Automatically Recharging if Battery Voltage Drops after Charging Cycle is Completed
  • Battery Powered Devices
  • Pb-Free Package is Available

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