AIC1790 Datasheet, PDF (1/19 Pages) Analog Intergrations Corporation – 1 Cell Linear Lithium-Ion Battery Charger

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 Li-
ion or Li-Pol Packs in Space Limited Applications
 No External MOSFET, Sense Resistor or Block-
ing 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 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 pro-
tection, high accuracy current and voltage regula-
tion, 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 au-
tomatically restarts the charge if the battery voltage
falls below an internal threshold. AIC1790 automat-
ically enters sleep mode when VCC supply is re-
moved.
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 1^st Rd., Science Park, Hsinchu 300, Taiwan, R.O.C.
TEL: [phone],
FAX: [phone] www.analog.com.tw
DS-1790G-04 20140716
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