ETA6954 Datasheet | ETA

Standalone 13.5V/3A, 1-Cell Battery Charger with Power Path Management DESCRIPTION ETA6954 is a highly-integrated 3A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. It Features fast charging with high input voltage support for a wide range of smart phones, tablets and portable devices. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. Its input voltage and current regulation deliver maximum charging power to battery. The solution is highly integrated with input reverse-blocking FET (Q1), high-side switching FET (Q2), low-side switching FET (Q3), and battery FET (Q4) between system and battery. It also integrates the bootstrap diode for the high-side gate drive for simplified system design. The device supports a wide range of input sources: standard USB host port, USB charging port, and USB pliant high voltage adapter. To support fast charging using high voltage adapter. The device is pliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation. The device also meets USB On-the-Go (OTG) operation power rating specification by supplying 5.15 V on VBUS with constant current limit up to 1.2A. The power path management regulates the system slightly above battery voltage but does not drop below 3.5 V minimum system voltage. With this feature, the system maintains operation even when the battery is pletely depleted or removed. When the input current limit or voltage limit is reached, the power path management automatically reduces the charge current to zero. As the system load continues to increase, the power path discharges the battery until the system power requirement is met. This Supplement Mode prevents overloading the input source. ETA6954 is available in a QFN4x4-24 package. Features - High-Efficiency, 1.5MHz Synchronous Switching Buck Charger -...