ACT8311

    5 V, 1.5 A PWM Step-Down DC/DC Converter

    Not Recommended For New Designs >

    Contact your local sales representative for assistance.

    Key Features

    • Multiple patents pending
    • Up to 95% high efficiency
    • Up to 1.5 A guaranteed output current (ACT8311)
    • 1.35 MHz constant frequency operation
    • 100% duty cycle low-dropout operation
    • 0.1 µA shutdown current
    • Enable/disable control
    • Minimal external components
    • Internal synchronous rectifier eliminates Schottky diode

    Qorvo's ACT8311 is a current-mode, fixed-frequency PWM, synchronous step-down DC/DC converter that is capable of delivering 1.5 A with efficiency of up to 95%. This device operates with a fixed frequency of 1.35 MHz, minimizing noise in sensitive equipment as well as optimizing both efficiency and component size and cost.

    This device features a very low-resistance power MOSFET and 100% duty cycle operation, making it an ideal choice for portable applications requiring a 3.0 V or 3.3 V rail to be generated from a Li+ battery. ACT8311 is capable of supplying up to 1.5 A of output current. It also has adjustable output voltages that are programmable down to 1.2 V.

    Contact Qorvo for custom fixed output voltage availability.

    ACT8311 is available in a 3 x 3 mm 8PIN TDFN33-8 package.

    Typical Applications

      • Wireless Handhelds
      • Portable Devices
      • GPS / PND equipment
    Topology Step-Down
    Input Voltage(V) 2.7 to 5
    Max Output Current(A) 1.5
    Frequency(kHz) 1,350
    USB PD 3.0 PPS Certification No
    Programmable Current Limit No
    Auxiliary Power Rails No
    AEC-Q100 No
    Package Type TDFN, 8-pin
    Package(mm) 3 x 3
    RoHS Yes
    Lead Free Yes
    Halogen Free Yes
    ITAR Restricted No
    ECCN EAR99