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ACT3704 Datasheet(PDF) 1 Page - Active-Semi, Inc |
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ACT3704 Datasheet(HTML) 1 Page - Active-Semi, Inc |
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1 / 15 page  Innovative Products. Active Solutions. - 1 - www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 TYPICAL APPLICATION CIRCUIT Rev2, 26-Jul-07 12V Linear-Mode Battery Charger for Li+/Li-polymer Cells FEATURES • Internal High Voltage MOSFET • Up to 12V Input Voltage • ±0.5% Output Voltage Accuracy • Charge Current Thermal Foldback • Programmable Termination Voltage • Programmable Fast Charge Current • Programmable Charging Timer • No Blocking Diode Required • Low Reverse Leakage • Preconditioning for Deeply Depleted Battery • Low Quiescent Current Standby Mode • Space-Saving, Thermally-Enhanced SOP- 8/EP, TDFN33-8 APPLICATIONS • Mobile Phone • Wireless Headsets • Portable Media Players • Cradle Chargers • Portable Devices GENERAL DESCRIPTION The ACT3704 is a complete linear charging solution for single cell Lithium Ion and Lithium Polymer bat- teries. It incorporates an internal 12V power MOS- FET for Constant-Current, Constant-Voltage control (CC/CV). The battery regulation voltage accuracy is ± 0.5% and can be set to either 4.1V or 4.2V. The charge current is programmed with an external resistor to a maximum of 1A to minimize total charge time. The reverse leakage current from the battery is less than 1µA if the input adaptor is disconnected or if there is a reverse battery connection. The ACT3704 is available in thermally-enhanced SOP-8/EP, and TDFN33-8 packages to accommodate high charge current operation and minimize total charging time. |
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