LD7105

LD7105
Off-Line High Brightness LED Driver

Features
  Constant frequency or constant off-time operation
  Switch mode controller for single switch drivers: Buck/Boost/Buck-boost/SEPIC
  Internal 450V linear regulator (can be extended using external zener diodes)
  Programmable MOSFET current limit
  Soft start
  +0.2A/-0.4A GATE drive

Applications
  RGB backlight applications
  Automotive LED driver application
  Battery Powered LED lamps

General Description
LD7105 is a current mode control LED driver IC. It has been designed for the purpose of controlling single switch PWM converters (buck, boost, buck-boost, or SEPIC) at a fixed frequency or fixed off-time mode.
Programmable MOSFET current limit allows for current limiting during input under voltage and output overload conditions.
For high power applications, the IC also comprises a 0.2A source and 0.4A sink GATE driver. There is an internal 9 to 450V linear regulator which powers the IC.
This makes it no longer necessary to separate power supply for the IC.
The LD7105 based LED driver ideally suited to RGB backlight applications with DC inputs. The LD7105 based LED lamp drivers can reach efficiency of more than 90% for buck and boost applications.