LM3445
Description
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.
Key Features
- Triac dim decoder circuit for LED dimming Application voltage range 80VAC - 270VAC Capable of controlling LED currents greater than 1A Adjustable switching frequency Low quiescent current Adaptive programmable off-time allows for constant ripple current Thermal shutdown No 120Hz flicker Low profile 10 pin MSOP Package Patent pending drive architecture
