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LM3658 датащи(PDF) 1 Page - Texas Instruments |
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LM3658 датащи(HTML) 1 Page - Texas Instruments |
1 / 21 page 1 2 3 4 5 10 9 8 7 6 LM3658 Stat2 Stat1 Iset Ts BATT 1 PF Battery Pack GND USB_sel EN_b 1 PF 1 PF CHG_IN 4.5V to 6V USBpwr 4.5V to 6V + LM3658 www.ti.com SNVS328E – MAY 2005 – REVISED MARCH 2007 LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications Check for Samples: LM3658 1 FEATURES DESCRIPTION The LM3658 is a single chip charger IC designed for 2 • Integrated Power FETs with Thermal handheld applications. It can safely charge and Regulation maintain a single cell Li-Ion/Polymer battery operating • Charges from Either an AC Wall Adapter or from an AC wall adapter or USB power source. Input USB Power Source with Automatic Source power source selection of USB/AC is automatic. With Selection both power sources present, the AC power source has priority. Charge current is programmed through • 50 mA to 1000 mA Charge Currents Using AC an external resistor when operating from an AC wall Wall Adapter adapter allowing charge currents from 50 mA to 1000 • Pin-Selectable USB Charge Currents of 100 mA. When the battery is charged using USB power, mA or 500 mA charge currents of 100 mA or 500 mA are pin- • LDO Mode with 1A of Source Current is selectable. The termination voltage is controlled to within ±0.35% of 4.2V. Automatically Invoked When the Battery is Absent and the AC Wall Adapter is Connected The LM3658 requires few external components and • Continuous Battery Temperature Monitoring integrates internal power FETs, reverse current protection and current sensing. The internal power • Built-in Multiple Safety Timers FETs are thermally regulated to obtain the most • Charge Status Indication efficient charging rate for a given ambient • Continuous Over-current and Temperature temperature. Protection The LM3658 operates in five modes: pre-qualification • Near-depleted Battery Pre-conditioning mode, constant-current mode, constant-voltage • Sleep Mode with Ultra Low Quiescent Current mode, top-off mode and maintenance mode. Additionally, the charger IC operates as a linear • On-board Kelvin-sensing Achieves ±0.35% regulator in “LDO mode”, when the AC wall adapter is Termination Accuracy connected and no battery is present. Optimal battery • Maintenance Mode with Automatic Recharge management is obtained through thermal regulation, • Thermally Enhanced 3 mm x 3 mm WSON battery temperature measurement and multiple safety timers. The LM3658 provides two open-drain outputs Package for LED status indication or connection to GPIOs. APPLICATIONS Typical Application • Smartphones • Digital Still Cameras • PDAs • Hard Drive and Flash-based MP3 Players • USB-powered Devices 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2005–2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Аналогичный номер детали - LM3658 |
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Аналогичное описание - LM3658 |
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