[PowTech]

GENERAL DESCRIPTION
The PT4115 is a continuous conduction mode inductive step-down  converter,  designed  for  driving  single  or multiple  series  connected  LED  efficiently  from  a voltage source higher than the  total  LED  chain  voltage. The device operates from an input supply between  6V and  30V  and  provides  an  externally  adjustable  output current  of  up  to  1.2A.  Depending  upon  the  supply voltage  and  external  components,  the  PT4115 can provide more than 30 watts of output power.

FEATURES
  Simple low parts count
  Wide input voltage range: 6V to 30V
  Up to 1.2A output current
  Single pin on/off and brightness control  using DC voltage or PWM
  Up to 1MHz switching frequency
  Typical 5% output current accuracy
  Inherent open-circuit LED protection
  High efficiency (up to 97%)
  High-Side Current Sense
  Hysteretic Control: No Compensation
  Adjustable Constant LED Current
  ESOP8 package for large output power application
  RoHS compliant

APPLICATIONS
  Low voltage halogen replacement LEDs
  Automotive lighting
  Low voltage industrial lighting
  LED back-up lighting
  Illuminated signs
  SELV lighting
  LCD TV backlighting