CN3762

CONSONANCE 4A, Standalone 2-Cell Li-ion Battery Charger CN3762 General Descriptions: The CN3762 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 CN3762 is specially designed for charging lithium ion batteries with constant current and constant voltage mode. In constant voltage mode, the regulation voltage can be fixed at 8.4V with ± 1% accuracy, also can be adjusted upwards with an external resistor. The constant charging current is programmable with a single current sense resistor. Deeply discharged batteries are automatically trickle charged at 17.5% of the programmed constant charging current until the cell voltage exceeds 66.5% of constant voltage. The charge cycle is terminated once the charging current drops to 16% of full-scale current, and a new charge cycle automatically restarts if the battery voltage falls below 95.5% of regulation voltage. CN3762 will automatically enter sleep mode ...