General Descriptions:
The CN3702 is a PWM switch-mode lithium ion battery charger controller for 2 cell li-ion battery in a small package using few external components. The CN3702 is specially designed for charging lithium ion batteries with constant current and constant voltage mode. In constant voltage mode, the regulation voltage is fixed at 8.4V with ± 1% accuracy. The constant charging current is programmable with a single sense resistor.

FEATUREs:
● Wide Input Voltage: 7.5V to 28V
● Complete Charger Controller for 2 cell
   Lithium-ion Battery
● Charge Current Up to 5A
● High PWM Switching Frequency:
   300KHz
● Constant Charging Voltage
   Accuracy: ± 1%
● Charging Current is programmed
   with a sense resistor
● Automatic Conditioning of Deeply
   Discharged Batteries
● End-of-Charge Current can be set
   by an external resistor
● Battery Temperature Monitoring
● Automatic Recharge
● Charger Status Indication
● Soft Start
● Battery Overvoltage Protection
● Operating Ambient Temperature
   － 40℃ to ＋85℃
● Available in 16 Pin TSSOP Package
● Pb-free , RoHS Compliant,
   and Halogen Free

APPLICATIONs:
● Portable DVD, Walkie-Talkie
● Notebook Computers
● Battery-Backup Systems
● Portable Industrial and
   Medical Equipment
● Standalone Battery Chargers