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LP4062 Datasheet(PDF) 1 Page - Lowpower Semiconductor inc |
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LP4062 Datasheet(HTML) 1 Page - Lowpower Semiconductor inc |
1 / 13 page Preliminary Datasheet LP4062 LP4062 –00 Ver. 1.0 Datasheet Nov.-2007 Page 1 of 13 600mA Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT General Description The LP4062 is a complete constant-current/constant- voltage linear charger for single cell lithium-ion batteries. Its ThinSOT package and low external component count make the LP4062 ideally suited for portable applications. Furthermore, the LP4062 is specifically designed to work within USB power specifications. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The LP4062 automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached. Other features include charge current monitor, under-voltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage. Order Information LP4062 - □ □ □ □ □ F: Pb-Free Package Type B5: SOT23-5 Applications Portable Media Players/MP3 players Cellular and Smart mobile phone PDA/DSC Bluetooth Applications Features Programmable Charge Current Up to 600mA No MOSFET, Sense Resistor or Blocking Diode Required Complete Linear Charger in ThinSOT Package for Single Cell Lithium-ion Batteries Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating Charges Single Cell Li-Ion Batteries Directly from USB Port Preset 4.2V Charge Voltage with ± 1% Accuracy Available in SOT23-5 Package Charge Current Monitor Output for Gas Gauging Automatic Recharge 2.9V Trickle Charge Threshold C/10 Charge Termination Typical Application Circuit LP4062B5F 2 4 5 3 1 GND VCC PROG BAT CHRG + 1uF BATT LED R 3.3K + 1uF Vin Marking Information Please see website. |
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