OCP8020

OCP8020 Standalone Linear Lithium Battery Charger „ General Description „ z z z z z z z z z z Features Programmable Charge Current Up to 800mA No MOSFET, Sense Resistor or Blocking Diode Required Constant-Current/Constant-Voltage Operation with Thermal Protection to Maximize Charge Rate without Risk of Overheating Charges Single Cell Li-Ion Batteries Directly from USB Port Press 4.2V Charge Voltage with ± 1% Accuracy 25µA. Supply Current in Shutdown 2.9V Trickle Charge Threshold Available Without Trickle Charge Soft-Start Limits Inrush Current Available in 5-pin SOT23 Package ge OCP8020 is a complete constant-current and constant-voltage linear charger for single cell lithium-ion and Lithium-Polymer batteries. Its SOT23-5L Package and low external component count make OCP8020 ideally suited for portable applications. Furthermore, the OCP8020 is specifically designed to work within USB power specification. At the same time, OCP8020 can also be used in the standalone lithium-ion and Lithium-polymer battery charger. 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 OCP8020 automatically terminates the charge cycle th the when the charge current drops to 1/10 programmed ...