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com API9221 Car/Wall or USB Supply Input Lithium Battery Charger with OVP USB Bypass and 10mA LDO Description The API9221 has two supply inputs for highly integrated portable applications, enabling charging from a USB host, wall adapter, or car adapter.
The PPR pin indicates to a host controller that a safe and valid supply is connected to either VUSB or VDC.
The higher charge current option from VDC will take priority if both supplies are connected.
The host controller can control the state of charging via the enable pin EN .
The API9221 implements the constant current/constant voltage (CC/CV) charge algorithm for Lithium based battery cells.
The connected cell will be cha...

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