General Descriptions:
The CN3717 is a PWM switch-mode battery charger controller for lead-acid battery in a small package using few external components. The CN3717 is specially designed for charging lead-acid battery with trickle charge, constant current charge, over-charge and float charge mode. In over-charge and float charge mode, the regulation voltage is set by the external resistor divider. The constant charging current is programmable with a single sense resistor.

FEATUREs:
● Wide Input Voltage: 7.5V to 28V
● Complete Charger Controller for
   Lead-Acid Battery
● Charge Current Up to 5A
● High PWM Switching Frequency:
   300KHz
● Over-Charge Voltage Set By the
   External Resistor Divider
● Charging Current is programmed
   with a sense resistor
● Automatic Conditioning of Deeply
   Discharged Batteries
● Over-charge Termination 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:
● Lead-Acid Battery Charger
● UPS
● Portable Industrial and
   Medical Equipment
● Standalone Battery Chargers