General Description:
The CN3052A is a complete constant-current /constant voltage linear charger for single cell Li-ion and Li Polymer rechargeable batteries. The device contains an on-chip power MOSFET and eliminates the need for the external sense resistor and blocking diode. Furthermore, the CN3052A is specifically designed to work within USB power specifications. Its low external component count makes CN3052A ideally suited for portable applications.

FEATUREs:
● Charges Single Cell Li-Ion Batteries Directly
   from USB Port or AC Adaptor
● On-chip Power MOSFET
● No external Blocking Diode or Current Sense
   Resistors Required
● Preset 4.2V Regulation Voltage with 1%
   Accuracy
● Precharge Conditioning for Reviving Deeply
   Discharged Cells and Minimizing Heat
   Dissipation During Initial Stage of Charge
● Continuous Programmable Charge Current Up
   to 500mA
● Constant-Current/Constant-Voltage Operation
   with Thermal Regulation to Maximize Charge
   Rate Without Risk of Overheating
● Automatic Low-Power Sleep Mode When Input
   Supply Voltage is Removed
● Status Indication for LEDs or uP Interface
● C/10 Charge Termination
● Automatic Recharge
● Battery Temperature Sensing
● Chip Enable Input
● Available in SOP8 Package
● Pb-free Available

APPLICATIONs:
● Cellular Telephones
● Digital Still Cameras
● MP3 Players
● Bluetooth Applications
● Portable Devices
● USB Bus-Powered Chargers