CN3801 Datasheet | CONSONANCE

CONSONANCE 4A, Standalone Li Fe PO4 Battery Charger IC With Photovoltaic Cell MPPT Function General Descriptions: The CN3801 is a PWM switch-mode Li Fe PO4 battery charger controller that can be powered by photovoltaic cell with maximum power point tracking function with few external ponents. The CN3801 is specially designed for charging Li Fe PO4 battery with constant current and constant voltage mode. In constant voltage mode, the regulation voltage is fixed at 3.625V with ±40m V accuracy. The constant charge current is programmable with a single current sense resistor. Deeply discharged batteries are automatically trickle charged at 17.5% of the full-scale current until the cell voltage exceeds 66.5% of constant voltage. The charge cycle is terminated once the charge 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. CN3801 will automatically enter sleep mode when input...