Active-Semi Solutions for Sustainability
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?Product Features

  • Up to 40V Input Voltage
  • Up to 1.5A output current
  • Output Voltage up to 12V
  • 2% Feedback Voltage Accuracy
  • Up to 93% Efficiency
  • 210kHz Switching Frequency Eases EMI Design
  • Patent Pending Active Constant Current Control
    ? Integrated Current Control Improves?Efficiency, Lowers Cost, and Reduces
    Component Count
  • Resistor Programmable
    ? Current Limit from 400mA to 1.5A
    ? Patented Cable Compensation from 0Ω to 0.5Ω
  • SOP-8EP Package
  • Advanced Feature Set
    ? Integrated Soft Start
    ? Thermal Shutdown
    ? Secondary Cycle-by-Cycle Current Limit
    ? Protection Against Shorted ISET Pin


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 resistor and its associated power loss. Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit.

五分快三计划The ACT4514 is available in a SOP-8 package and require very few external devices for operation.


  • Car Charger
  • Rechargeable Portable Device
  • General Purpose CC/CV Power Supply