深圳市科瑞芯电子有限公司

ETA钰泰 ETA4256D3K DFN3x3-10

DESCRIPTION
ETA4256isa single cll, flly itegated constant uret (C)/constant voltage(CV)
Liion battery charger. lts compact package with minimum external components
requirement makes the ETA4256 ideal for portable aplications. No extenal sense
resistor or blocking diode is nesary for the ETA4256. Build-in thermal fdback
mechanism regulates the charge curent to control the die temperature during high
power operation or at elevated ambient temperature. The ETA4256 has a pre charge
function for ticklei charging deeply discharged bttrie. The fast charge urrentan
be programmed by an external resistor. CV regulation mode is automatically
enabled once the bttery's charging curve Ieaches the constant voltage portion. The
output curent then decays and is fnally terminated once the charge curent drops
to 1/5ofthe pogrammed value TheETA4256 kpes monitoring the bttery voltage .
and enables a new charge qyle once the voltage drops by 200mV below the CV
value.

ETA4256is in an DFN3x3-10 package.