LM3445 Datasheet (National Semiconductor) - Triac Dimmable Offline LED Driver

LM3445, Triac Dimmable Offline LED Driver

The LM3445 is an adaptive constant off-time AC/DC buck (step-down) constant current controller designed to be compatible with triac dimmers.

The LM3445 provides a constant current for illuminating high power LEDs and includes a triac dim decoder.

The dim decoder allows wide range LED dimming using s

LM3445 Features

* include thermal shutdown, current limit and V CC under-voltage lockout. Features

* Triac dim decoder circuit for LED dimming Application voltage range 80VAC

* 270VAC Capable of controlling LED currents greater than 1A Adjustable swit