ETA4040
DESCRIPTION
FEATURES
ETA4040 is a single cell, fully integrated constant current (CC)/constant voltage (CV) Li-ion battery charger. Its pact package with minimum external ponents requirement makes the ETA4040 ideal for portable applications. No external sense resistor or blocking diode is necessary for the ETA4040. Build-in thermal feedback mechanism regulates the charge current to control the die temperature during high power operation or at elevated ambient temperature. The ETA4040 has the function of pre-charge, which can charge the deeply discharged batteries by trickle. The fast charge current can be programmed by an external resistor. CV regulation mode is automatically enabled once the battery’s charging curve reaches the constant voltage portion. The pre-charge current and the termination current threshold are programmed by an external resistor as well. The ETA4040 keeps monitoring the battery voltage and enables a new charge cycle once the voltage drops by 100m V below the...
