Single and Dual Cell Li+ Battery Charger IC
Preliminary Datasheet
LP28009
Single and Dual Cell Li+ Battery Charger IC –LP28009
General Description
The LP28009 is...
Description
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...
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