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发布者:微桥 发布时间:2013-1-14 阅读:4724次    关键字: DC-DC
AX3802-2A,23V,500KHz Synchronous Buck Converter


AX3802-2A,23V,500KHz Synchronous Rectified Step-Down Converter

Introduction
    The AX3802  is  a  monolithic  synchronous buck  regulator.  The  device  integrates  two 110mΩ MOSFETs, and provides 2A of continuous load current over a wide input voltage of 4.75V  to 23V.  Current  mode  control  provides  fast  transient  response  and  cycle-by-Cyclecurrent limit.  Internal soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 5μA.
    This  device,  available  in SOP-8L  and  SOP-8L-EP package,  provides  a  very  compact solution with minimal external components.

Features
-  2A Output Current
-  Wide 4.75V to 23V Operating Input Range
-  Integrated 110mΩ Power MOSFET Switches
-  Output adjust from VFB to 20V
-  Internal compensation
-  Up to 94% Efficiency
-  Stable with Low ESR Ceramic Output Capacitors
-  Fixed 500KHz Frequency
-  Cycle-by-Cycle Over Current Protection
-  Thermal shutdown and short circuit protections


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