40 V, 1.5 A Sensorless CC/CV Step-Down DC/DC Converter

    Last Time Buy >

    Please use ACT4533A for new designs
    End of Life announced October 9, 2020 (PCN 20-0153).
    Last Time Buy: April 24, 2021
    Contact your local sales representative for assistance.

    Key Features

    • Up to 40 V input voltage
    • Up to 1.5 A output current
    • Output voltage up to 12 V
    • 2% feedback voltage accuracy
    • Up to 93% efficiency
    • 210 kHz switching frequency eases EMI design
    • Patent pending Active CC constant current control
    • Resistor programmable
    • Advanced feature set

    Qorvo's ACT4514 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. ACT4514 provides up to 1.5 A output current at 210 kHz 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 drivers for architectural lighting.

    The product 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.

    ACT4514 is available in a SOP-8 package and requires very few external devices for operation.

    Typical Applications

      • Car Chargers
      • Rechargeable Portable Devices
      • General Purpose CC/CV Power Supplies
    Topology Step-Down
    Input Voltage(V) 10 to 40
    Max Output Current(A) 1.5
    Frequency(kHz) 210
    ActiveCharge™ with Qualcomm QC 2.0 No
    AEC-Q100 No
    Cable Compensation Yes
    Sensorless CC Control Yes
    Package Type SOP-8
    RoHS Yes
    Lead Free Yes
    Halogen Free Yes
    ITAR Restricted No
    ECCN EAR99