钰泰 ETA6071 QFN-20 电池充电管理芯片

　　DESCRIPTION

　　ETA6071 is a wide input range, high eciency, synchronous 2-cell series Li-Ion

　　battery cell boost charger. It accepts input from 2.7V to 7V and is capable of

　　delivering up to 2.5A charge current to two stacked Li-lon batteries. The

　　charging current and termination voltage can both be programmed through

　　external resistors. There are also an input current limit stting and a dynamic

　　input power management sttng. These features can be used for limiting the

　　charging crrent whena weak power soure isplugged in. The boost has atrue-

　　shutof function that disconnects the input from output when short circuit or

　　shut down ocCurS. A NTC function is also incduded to configure charging at

　　difrent temperatures. A STAT function indicates charging status. Furthermore,

　　ETA6071 incorporates an OTG function that when enabled, with the same

　　inductor, one can reversely deliver power from the barteries to VBUS. It can

　　deliver up to 2A at 5V.