ACT4088

    28 V, 1.5 A, 1.4 MHz Step-Down DC/DC Converter

    Key Features

    • Wide 4.5 to 28 V input voltage range
    • 1.5 A output current (12 Vin to 5 Vout)
    • Output adjustable down to 0.81 V
    • 0.3 Ohm internal power MOSFET
    • Up to 92% efficiency
    • Stable with low ESR ceramic capacitors
    • Fixed 1.4 MHz operating frequency
    • Internal soft-start function
    • Over-current protection with hiccup mode
    • Thermal shutdown

    Qorvo's ACT4088 is a current-mode step-down DC/DC converter that supplies up to 1.5 A into 5 V from a 12 V input. The 1.4 MHz switching frequency allows the use of tiny external components and internal loop compensation provides simple, stable power supplies with a minimum of external components.

    Optimized for use with ceramic input and output capacitors, ACT4088 provides a very compact 1.5 A power supply for space-constrained mobile and consumer applications. The product operates over a wide input voltage range and utilizes current-mode operation to provide excellent line and load transient response while requiring no external compensation components. Fault protection includes cycle-by-cycle current limiting, frequency foldback, hiccup mode and thermal shutdown. Internal soft-start provides a controlled startup with no overshoot, even at light loads.

    ACT4088 is available in a tiny SOT23-6 package and requires very few external components.

    Typical Applications

      • TFT LCD Monitors
      • Portable DVD Players, Headphones, MP3 Players, etc.
      • Car-Powered or Battery-Powered Equipment
      • Set-Top Boxes
      • Telecom Power Supplies
      • DSL and Cable Modems and Routers
    Topology Step-Down
    Input Voltage(V) 4.5 to 28
    Max Output Current(A) 1.5
    Frequency(kHz) 1,400
    ActiveCharge™ with Qualcomm QC 2.0 No
    AEC-Q100 No
    Cable Compensation No
    Sensorless CC Control No
    Package Type SOT-23, 6-pin
    RoHS Yes
    Lead Free Yes
    Halogen Free Yes
    ITAR Restricted No
    ECCN EAR99

    ACT4088EVK1ACT4088EVK1 Evaluation Kit

    ACT4088EVK1 Evaluation Tool User Guide

    The Evaluation Tool Users Guide describes the characteristics and operation of the Qorvo ACT4088EVK1 evaluation kit (EVK). It provides setup and operation instructions, schematic, layout, BOM, and test data.

    This EVK demonstrates the ACT4088US-T power management IC.