LP28009

Preliminary Datasheet LP28009 Single and Dual Cell Li+ Battery Charger IC –LP28009 General Description The LP28009 is a fully integrated low cost single-cell and dual cell Li-Ion battery charger IC ideal for portable applications. The LP28009 is capable of being powered up from AC adapter. The LP28009 enters sleep mode when AC adapter is removed. The LP28009 optimizes the charging task by using a control algorithm including preconditioning mode, fast charge mode and constant voltage mode. The charging task is terminated as the charge current drops below the preset threshold. The AC adapter charge current can be programmed up to 1.2A with an external resister. The internal thermal feedback circuitry regulates the die temperature to optimize the charge rate for all ambient temperatures. The LP28009 features 18V maximum rating voltages for AC adapter. The other features are under voltage protection, over voltage protection for AC adapter supply and battery temperature monitoring. Order Information LP28009 □ □ □ □ □ F: Pb-Free Package Type SP: SOP-8(EP) Output Voltage 42: 4.2V 84: 8.4V Applications  Portable Media Players/MP3 players  Cellular and Smart mobile phone  PDA/DSC  Bluetooth Applications Features  18V Maximum Rating for AC Adapter  Internal Integrate P-MOSFETs  AC Adapter Power Good Status Indicator  Charge Status Indicator  Under Voltage Protection  Over Voltage Protection  Automatic Recharge Feature  Battery Temperature Monitoring  Small 8-Lead SOP(E...