ETA9740 3A Switching Charger, 2.
4A Boost and Fuel Gauge in One ESOP8 with Single Inductor DESCRIPTION ETA9740 is a switching Li-Ion battery charger capable of delivering up to 3A of charging current to the battery and also capable of delivering up to 5V/2.
4A in boost operation, with high efficiency in both charging mode and boost mode.
It also includes a fuel gauge system for power indication.
For charging, it uses a proprietary control scheme that eliminates the current sense resistor for conventional constant current control, maximizing efficiency, reducing charging time and reducing costs.
It can also output a 5V voltage in the reversed direction by boosting from the battery.
It only ne...

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