AIC1790 Datasheet | Analog Intergrations Corporation

FEATURES - plete 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 1000m A 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 Indi- cates Charge and Fault Conditions - Battery Insertion and Removal Detection - Available in Tiny Thermally Enhanced MSOP10 Exposed Pad Package, SOP-8 Exposed Pad Package and 3mm X 3mm DFN-10 Exposed Pad Package - APPLICATIONS - Cellular Phones - Handheld Devices - Digital Still Cameras - MP3 Players - PDAs - Charging Docks and Cradles - USB Chargers - GENERAL 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 regulation, 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 voltage falls below an internal threshold. AIC1790 automatically 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. Analog Integrations Corporation Si-Soft Research Center 3A1, 1 Li-Hsin 1st Rd., Science Park, Hsinchu 300, Taiwan, R.O.C. TEL: 886-3-5772500, FAX: 886-3-5772510 .analog..tw DS-1790G-04...