3A, 18V Synchronous RectifiedStep-Down Converter

                                                       Product：AP2953A

一、General Description 

The  AP2953A is  a  monolithic synchronous  buck  regulator.The  device  integrates  100mΩ  MOSFETS  that  provide  3Acontinuous load  current over  a wide  operating input  voltageof 4.75V to 18V. Current mode control provides fast transientresponse and cycle-by-cycle current limit.An adjustable soft-start  prevents inrush current  at turn-on. In

shutdown mode, the supply current drops below 1μA.This device,  available  in an  8-pin SOP  package, provides  avery  compact   system  solution   with  minimal   reliance   onexternal components.

 

二、 Features                                       

  3A Output Current

  Wide 4.75V to 18V Operating Input Range

  Integrated 100mΩ Power MOSFET Switches

  Output Adjustable from 0.925V to 15V

  Up to 95% Efficiency

  Programmable Soft-Start

  Stable with Low ESR Ceramic Output Capacitors

  Fixed 370KHz Frequency

  Cycle-by-Cycle Over Current Protection

  Input Under Voltage Lockout

  Thermally Enhanced 8-Pin SOP Package

 

三、Applications

  Distributed Power Systems

  Networking Systems

  FPGA, DSP, ASIC Power Supplies

  Green Electronics/ Appliances

  Notebook Computers

 

四、Package/Order Information 

五、Typical Application

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