ACT4514

FEATURES Up to 40V Input Voltage Up to 1.5A Constant Output Current Output Voltage up to 12V Patent Pending ActiveCC Constant Current Control  Integrated Current Control Improves Efficiency, Lowers Cost, and Reduces Component Count Resistor Programmable Outputs  Current Limit from 400mA to 1500mA  Patented cable Compensation from DC Cable Compensation from 0Ω to 0.5Ω 2% Feedback Voltage Accuracy Up to 93% Efficiency 210kHz Switching Frequency Eases EMI Design Advanced Feature Set  Integrated Soft Start  Thermal Shutdown  Secondary Cycle-by-Cycle Current Limit  Protection Against Shorted ISET Pin SOP-8 Package ACT4514 Wide Input Sensorless CC/CV Step-Down DC/DC Converter APPLICATIONS Car Charger / Adaptor Rechargeable Portable Devices General-Purpose CC/CV Power Supply GENERAL DESCRIPTION ACT4514 is a wide input voltage, high efficiency ActiveCC step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. ACT4514 provides up to 1.5A output current at 210kHz switching frequency. ActiveCC is a patent-pending control scheme to achieve highest accuracy sensorless constant current control. ActiveCC eliminates the expensive, high accuracy current sense resistor, making it ideal for battery charging applications and high-brightness LED drive for architectural lighting. The ACT4514 achieves higher efficiency than traditional constant current switching regulators by eliminating the sense resi...