钰泰 ETA4056E8A ESOP-8 电池充电管理芯片

　　DESCRIPTION

　　ETA4056is a single cll,l flly itegrated constant urent (C)/constant voltage (CV)

　　Li-ion bttery charger. Its compact package with minimum external components

　　requirement makes the ETA4056 ideal for portable aplicationso. No extemal sense

　　resistor or blocking diode is necessary for the ETA4056. Build-in thermal fedback

　　mechanism regulates the charge curent t0 contol the die temperature duing high

　　power operation or at elevated ambient temperature. The ETA4056 has a pre- charge

　　function for tickle charging deeply discharged bttres. The fast charge curentcan

　　be programmed by an external resistor. CV regulation mode is automatically

　　enabled once the batryscharingcurve reaches the constant voltage portin. The

　　output crrent then decays and is fnallyl terminated once the charge crrent drps

　　to 1/10th of the programmed value. The ETA4056 keeps monitoring the battery

　　voltage and enables a new charge cydle once the voltage drops by 120mV below

　　the CV value.

　　ETA4056is in an ESOP8, DFN2x2 8, DFNx3-8, and SOT23-6package.

　　FEATURES

　　16V input sadffvoltage

　　4.2V charge ermnation volage

　　2.9V trickle charge threshold

　　Charge crrent programmable, up t0 1.2A

　　250nA BAT crrent when no charging

　　Soft- start limits in-rushurrent

　　ESOP8/DFN2x2-8/DFN2x3-8/S0T23-6