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CN3303 PFM Step-up 3-cell Lithium Battery Charger IC - SOP8
This IC enables charging of 3 cell battery packs to be charged via a 5V Supply. If you want to charge a 3 cell battery from the USB port this chip can enable the same.CN3303 is a PFM mode step-up battery charge management IC with an operating voltage range between 2.7V to 6.5V. It is specially designed for 3-cell lithium battery charge management with fewer external components. CN3303 adopts constant current and quasi-constant voltage(Quasi-CVTM) mode to charge the battery.
Datasheet [PDF]
→Input Voltage Range：2.7V to 6.5V →Operating Current：280uA@VIN=5V →Inductor Current Detection →Switching Frequency up to 1MHz →Quasi-CV mode to Compensate for the Voltage Loss on Battery Internal Resistance and Trace Resistance →Automatic Recharge →Output Power up to 35W →Protection for Low Battery Voltage and Short Battery →Automatic Adaptability to Input Supply with Limited Driving Capability →Chip Enable Input →Battery Overvoltage Protection →Status Indication →Operating Temperature ：－40℃ to 85℃ →Available in SOP8 Package
