General Description：  
 
 
 

   The SX1308 is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small,
 
 
 

   SX1308 switches at 1.2MHz and allows the use of tiny, low cost capacitors and inductors 2mm or less in height 
 
 
 

   Internal soft-start results in small inrush current and extends battery life. 
 
 
 

1308 includes 
 

  under-voltage lockout, current limiting,
 

. 
 
 
 

     
 
 
 

   Features： 
 
 
 

  zIntegrated 100mΩ Power MOSFET 
 

  z2V to 24V Input Voltage 
 

  z1.2MHz Fixed Switching Frequency 
 

  zInternal 4A Switch Current Limit 
 

  zAdjustable Output Voltage 
 

  zInternal Compensation 
 

  zUp to 28V Output Voltage 
 

  zAutomatic Pulse Frequency Modulation 
 

  zMode at Light Loads 
 

  zup to 97% Efficiency 
 

  zAvailable in a 6-Pin SOT23-6 Package 
 

    
 

  Applications： 
 
 
 

   zBattery-Powered Equipment 
 
 
 

   zSet-Top Boxed 
 
 
 

   zWhite LED Driver 
 
 
 

   zDSL and Cable Modems and Routers 
 
 
 

   zNetworking cards powered from PCI or PCI express slots