SHOUDING 首鼎 SD8906A 固定频率、电流模式降压IC,
 

  The SD8906A is a constant frequency, device integrates a main switch and a synchronous rectifier for high efficiency 
 

  runs from a single cell Lithium-Ion (Li+)  can also run at      duty cycle for low dropout operation, 
 

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  PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the load. 
 

  The SD8906A is offered in a low profile (1mm)5-pin, thin SOT package, and is available in an adjustable version and fixed output voltage of 1.2V,1.5V, 1.8V,2.5V and 3.3V. 
 
 
 

   FEATURES 
 
 
 

    High Efficiency: Up to 96% 
 
 
 

    1.5MHz Constant Frequency Operation 
 
 
 

    600mA Output Current 
 
 
 

    No Schottky Diode Required 
 
 
 

    2.3V to 5.5V Input Voltage Range 
 
 
 

    Output Voltage as Low as 0.6V 
 
 
 

         Duty Cycle in Dropout 
 
 
 

    Low Quiescent Current: 35μA 
 
 
 

    Slope Compensated Current Mode 
 
 
 

   Control for Excellent Line and Load 
 
 
 

    Short Circuit Protection Transient Response 
 
 
 

    Thermal Fault Protection 
 
 
 

    Inrush Current Limit and Soft Start 
 
 
 

    <1μA Shutdown Current 
 
 
 

    Tiny SOT23-5 Package   
 
 
 

   APPLICATIONS 
 
 
 
 Digital Still and Video Cameras 
 

   Wireless and DSL Modems 
 

   PDAs 
 

   MP3 Players  
 

   Cellular and Smart Phones