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  • TD1484B

  • TD1484B 3A 23V Synchronous Rectified Step-Down Converte

    (DATASHEET)


    The TD1484B is a monolithic synchronous buck regulator.  The  device  integrates  two  90mΩ MOSFETs, and provides 3A of continuous load current over a wide input voltage of 4.75V to 23V.   Current    mode        control provides      fast transient response and cycle-by-cycle current limit.

    An adjustable soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 1µA. The TD1484B regulates the output voltage in automatic PSM/PWM mode operation, depending on the outputcurrent, for high efficiency operation over light to full load current.

    This  device,     available  in      an     SOP8-PP package, provides a very compact solution with minimal external components.
     

    Features

    3A Output Current
    Wide 4.75V to 23V Operating Input Range
    Integrated 90mΩ Power MOSFET Switches
    Output Adjustable from 0.923V to 20V
    Up to 93% Efficiency
    Pulse Save Mode(PSM)/PWM Mode Operation
    Programmable Soft-Start
    Stable with Low ESR Ceramic Output Capacitors
    Fixed 340KHz Frequency
    Cycle-by-Cycle Over Current Protection
    Input Under Voltage Lockout

    Applications

     Distributed Power Systems

     Networking Systems

     FPGA, DSP, ASIC Power Supplies

     Green Electronics/ Appliances

     Notebook Computers

     

    Typical Application Circuit