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
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- 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
