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AIC1790

1 Cell Linear Lithium-Ion Battery Charger

FEATURES
  • Complete Linear Charger for 1 Cell Lithium-Ion Battery
  • Ideal for Low-Dropout Designs for Single-Cell Liion or Li-Pol Packs in Space Limited Applications
  • No External MOSFET, Sense Resistor or Blocking Diode Required Up to 1000mA Charge Current
  • Reverse Leakage Protection Prevents Battery Drainage
  • Integrated Current and Voltage Regulation
  • Charge Termination by 1/10 Full Charge Current
  • Precharge With Safety Timer
  • Status Outputs for LED or System Interface Indicates Charge and Fault Conditions
  • Battery Insertion and Removal Detection
  • Available in Tiny Thermally Enhanced MSOP-10E, SOP-8E and DFN-10 (3x3)Package
APPLICATIONS
  • Cellular Phones
  • Handheld Devices
  • Digital Still Cameras
  • MP3 Players
  • PDAs
  • Charging Docks and Cradles
  • USB Chargers
DESCRIPTION
The AIC1790 is highly integrated Li-ion and Li-Pol linear charge devices targeted at space limited portable applications. It offers integrated power MOSFET and current sensor, reverse blocking protection, high accuracy current and voltage regu-lation, charge status, and charge termination, in a small package.
The AIC1790 charges the battery in three phases, precharge, constant current and constant voltage. Charge is terminated based on 1/10 full charge current. An internal charge timer provides a backup safety feature for charge termination. AIC1790 automatically restarts the charge if the battery vol-tage falls below an internal threshold. AIC1790 au-tomatically enters sleep mode when VCC supply is removed.
In addition to the standard features, AIC1790 offers a multitude of additional features. These include temperature-sensing input for detecting hot or cold battery packs; power good (PG) output indicating the presence of input power.
TYPICAL APPLICATION


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