Description

LD***5 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 **0V linear regulator which powers the IC. This makes it no longer necessary to separate power supply for the IC. The LD***5 based LED driver ideally suited to RGB backlight applications with DC inputs. The LD***5 based LED lamp drivers can reach efficiency of more than *0% for buck and boost applications. Features 1. Constant frequency or constant off-time operation 2. Switch mode controller for single switch drivers: Buck/Boost/Buck-boost/SEPIC 3. Internal **0V linear regulator (can be extended using external zener diodes) 4. Programmable MOSFET current limit 5. Soft start 6.*0.2A/*0.4A GATE drive