PT6103-Standalone Linear Li-Ion Battery Charger with Thermal Regulation and Battery Thermal Protection  PDF文档下载
GENERAL DESCRIPTION
The PT6103 is a highly integrated Li-ion battery linear charging management device targeted at space limited portable applications. The PT6103 offers an integrated MOSFET and current sensor, reverse blocking protection, high accuracy current and voltage regulation, charge status indication, and charge termination in SOT23,DFN6,DFN8 or ESOP8 package. The PT6103 charges a battery in three phases: trickle charging, constant current and constant voltage. No blocking diode is required due to the internal MOSFET architecture. The thermal feedback regulates the charging current to limit the chip temperature during high power operation or high ambient temperature to maximize the charge rate without risk of overheating . The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The PT6103 automatically terminates the charge cycle when the charge current drops to 1/10 the programmed value after the final float voltage is reached. Once the temperature outside the normal range thresholds is detected the PT6103 immediately stops the charging and CHG pin output 10Hz square wave. And charging is stopped until restart the chip again. And when the TS pin is floating or connected to ground, the battery temperature protection is disabled.
FEATURES
Charges Single Cell Li-Ion Batteries Directly from USB Port
Programmable Charge Current Up to 800mA
No MOSFET, Sense Resistor or Blocking Diode Required
Complete Linear Charger in SOT23-6, DFN6, DFN8 or ESOP8 Package for Single Cell Lithium-Ion Batteries
Battery Thermal Protection
Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating
Preset 4.2V Charge Voltage with ±1% Accuracy
APPLICATIONS
Cellular Telephones, PDAs, MP3 Players
Bluetooth Applications
Digital Cameras
Charging Docks and Cradles
TYPICAL APPLICATION CIRCUIT
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