30 V, 3.0 A Step-Down DC/DC Converter

    Key Features

    • 3 A output current
    • Up to 95% efficiency
    • 6 to 30 V input range
    • 100 µA shutdown supply current
    • 4 mA standby input current
    • 300 kHz switching frequency
    • Output voltage up to 12 V
    • Cycle-by-cycle current limit protection
    • Thermal shutdown protection
    • Internal soft start function
    • Frequency foldback at short circuit
    • Stability with wide range of capacitors (including low ESR ceramic capacitors)

    Qorvo's ACT4070B is a wide input voltage step-down DC/DC converter that provides up to 3 A output current at 300 kHz switching frequency.

    ACT4070B is a replacement part for ACT4070 with advanced features such as lower standby current and higher light load efficiency. ACT4070B can be dropped into ACT4070 socket with only the feedback resistance value changed.

    ACT4070B's protection features include cycle-by-cycle current limit, thermal shutdown and frequency foldback at over-current and short circuit. The device is available in a SOP-8EP package and requires very few external devices for operation.

    Typical Applications

      • TFT LCD Monitors
      • Portable DVDs
      • Car-Powered or Battery-Powered Equipment
      • Set-Top Boxes
      • Telecom Power Supplies
      • DSL and Cable Modems and Routers
    Topology Step-Down
    Input Voltage(V) 6.5 to 30
    Max Output Current(A) 3.0
    Frequency(kHz) 300
    ActiveCharge™ with Qualcomm QC 2.0 No
    AEC-Q100 No
    Cable Compensation No
    Sensorless CC Control No
    Package Type SOP-8EP
    RoHS Yes
    Lead Free Yes
    Halogen Free Yes
    ITAR Restricted No
    ECCN EAR99