ACT4515

FEATURES 40V Input Voltage Surge Up to 1.5A Constant Output Current Output Voltage up to 12V Patent Pending Active CC 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 0Ω to 0.5Ω ±7.5% CC Accuracy  Compensation of Input/ Output Voltage Change  Temperature Compensation  Independent of Inductance and Inductor DCR 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 ACT4515 Wide Input Sensorless CC/CV Step-Down DC/DC Converter APPLICATIONS Car Charger Rechargeable Portable Devices General-Purpose CC/CV Supply GENERAL DESCRIPTION ACT4515 is a wide input voltage, high efficiency Active CC step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. ACT4515 provides up to 1.5A output current at 210kHz switching frequency. Active CC is a patent-pending control scheme to achieve highest accuracy sensorless constant current control. Active CC eliminates the expensive, high accuracy current sense resistor, making it ideal for battery charging applications and high-brightness LED drive for architectural lighting. The ACT4515 achieves hi...