无锡硅动力推出媲美德信3270产品，占空比百分百，可搭配PD做5V3.1A的USB口

Features 

?  5V ~ 30V Supply Voltage Range 
?  32V Input Over Voltage Protection 
?  2% Voltage Reference Accuracy 
?  5% Constant Current Accuracy 
?  Programmable Frequency（60KHz ~ 1MHz） 
?  Built in Adjustable Line-Compensation 
?  Hiccup Short Circuit Protection 
?  Duty Cycle Range (0~100%) 
?  Internal Soft Start 3ms 
?  CC/CV Mode Control 
?  SOP-8L Package 
Applications 
?  Car Chargers  

?  Portable Charger Devices 

?  DC/DC Converters with Current Limit  

General Description 
         The  SP1231FL  is  a  synchronous  buck  Regulator  with output current to 3.1A.It is designed to allow for operating a wide supply voltage range from 5V to 30V. The internal compensation  requires  a  minimum  number  of  readily available standard external components. The  SP1231FL  operates  in  the  CC(Constant  output Current) mode or CV(Constant output Voltage) mode, and the OCP  current  value  is  set  by  current  sensing  power resisters or setting non power resisters.  

        The SP1231FL is suitable for the DC/DC switching power applications  when  requested  the  current  limit  function. The devices are available in SOP-8L package and require very few external devices for operation.