HC1083
 
产品型号: HC1083
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The HC1083  is a dual high efficiency  synchronous,  PWM  step-down  DC/DC  converters working under an input voltage range  of 2.5V to 5.5V. This feature makes the  HC1083  suitable  for  single  Li-lon  battery-powered applications. 100% duty cycle  capability extends battery life in portable devices,  while the quiescent current is 190 µ A with no load,  and drops to < 1 µ A in shutdown.
    The internal synchronous switch is desired to  increase efficiency without an external Schottky  diode. The 1.43 MHz fixed switching frequency  allows the using of tiny, low profile inductors and  ceramic capacitors, which minimized overall  solution footprint.
   The HC1083 converters are available in the  industry standard DFN-10L Packages.
   
Applications
• Digital cameras and MP3
• Palmtop computers 
 PDAs
• MID
 

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