钰泰芯片ETA4046D2I是便携式应用的理想选择

　　DESCRIPTION

　　ETA4046 is a single cell, fully integrated constant current (CC)/constant voltage (CV) Li-ion battery charger. Its compact package with minimum external components requirement makes the ETA4046 ideal for portable applications. No external sense resistor or blocking diode is necessary for the ETA4046. Build-in thermal feedback mechanism regulates the charge current to control the die temperature during high power operation or at elevated ambient temperature. The ETA4046 has a pre-charge function for trickle charging deeply discharged batteries. The fast charge current can be programmed by an external resistor. CVregulation mode is automatically enabled once the battery's charging curve reaches the constant voltage portion. The output current then decays and is finally terminated once the charge current drops to 1/5th of the programmed value. The ETA4046 keeps monitoring the battery voltage and enables a new charge cycle once the voltage drops by 120mV below the CV value.

　　FEATURES

　　16V input standoff voltage

　　4.2V charge termination voltage

　　2.9V trickle charge threshold

　　Charge current programmable, up to 1.2A

　　250nA BAT current when no charging

　　Soft-start limits in-rush current

　　APPLICATIONS

　　E-cigarette

　　Toys

　　Bluetooth applications

　　Li-ion battery powered devices