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AAT3682 Datasheet(PDF) 1 Page - Advanced Analog Technology, Inc. |
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AAT3682 Datasheet(HTML) 1 Page - Advanced Analog Technology, Inc. |
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1 / 18 page  AAT3682 Lithium-Ion/Polymer Linear Battery Charger 3682.2006.12.1.3 1 BatteryManager™ General Description The AAT3682 is a lithium-ion/polymer linear battery charger. It is designed for compact portable appli- cations with a single-cell battery. The AAT3682 pre- cisely regulates battery charge voltage and charge current, and offers an integrated pass device, mini- mizing the number of external components required. The AAT3682 charges the battery in three different phases: preconditioning, constant current, and con- stant voltage. In preconditioning mode, the charge current has two different levels and is controlled by one external pin. Battery charge temperature and charge state are carefully monitored for fault condi- tions. A battery charge stable monitor output pin is provided to indicate the battery charge status through a display LED or interface to a system con- troller. The AAT3682 has a sleep mode option for when the input supply is removed. In this mode, it draws only 2.0µA of typical current. The AAT3682 is available in a Pb-free, 16-pin QFN44 package and is specified over the -20°C to +70°C temperature range. Features •VIN Range: 4.7V to 6.0V • Low Quiescent Current, Typically 0.5mA • 1% Accurate Preset Voltage • Up to 1A of Charging Current • Integrated Pass Device • Battery Temperature Monitoring • Fast Trickle Charge Option • Deep Discharge Cell Conditioning • LED Charge Status Output or System Microcontroller Serial Interface • Power-On Reset • Lower Power Sleep Mode • Status Outputs for LED or System Interface Indicates Charge and Fault Conditions • Temperature Range: -20°C to +70°C • 16-Pin QFN44 Package Applications • Cellular Telephones • Digital Still Cameras • Hand-Held PCs • MP3 Players • Personal Data Assistants (PDAs) Typical Application VP Gate DRV CSI VCC VSS BAT T2X BSENSE TS STAT R SENSE C IN = 10μF C OUT = 1μF LED 1 R 2 = 1K BATT+ BATT- R T1 VP R T2 TEMP Adapter R 4 R 3 |
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