LX1684

Supply Voltage (VC1) ......................................................................................18V 
Supply Voltage (VCC) ........................................................................................7V 
Input Voltage (CSP Pin)..................................................................................14V 
Output Drive Peak Current Source (500ns)....................................................1.0A 
Output Drive Peak Current Sink (500ns)........................................................1.0A 
Input Voltage (SS/ENABLE Pin)...........................................................-0.3 to 6V 
Operating Junction Temperature ..................................................................150°C 
Storage Temperature ...................................................................-65°C to +150°C 
Lead Temperature (Soldering 10 Seconds) ..................................................300°C 
 

The LX1684 is a monolithic, voltage- mode  pulse-width  modulator  controller. It  is  designed  to   mplement  a  flexible, low  cost  buck  (step-down)  regulator supply  with  a  minimal  of  external components.  

The  LX1684  has  a  synchronous driver  for  higher  efficiency  and  is optimized  to  provide  12V  to  3.3V  or 12V  to  2.5V  regulation.    It  also  can  be used to convert 5V or 3.3V to voltages as low as 1.25V. Switching frequency  is fixed  at 175kHz  for  optimal  cost  and  space. Short-circuit  current  limiting  can  be implemented  without  expensive  current sense resistors.