LM3445MX

• Triac dim decoder circuit LED dimming
• Application voltage range AC 80V - 277V AC
• It can control the LED current more than 1A
• Adjustable switching frequency
• Low quiescent current
• Adaptive programmable shutdown time allows constant ripple current
• Thermal shutdown
• No 120Hz flickering
• Low-profile 10-pin MSOP package or 14-pin SOIC
• Patent-pending drive architecture

illustrate

The LM3445 is an adaptive constant shutdown time AC/DC step-down (step-down) constant current controller designed as a bidirectional triac dimmer compatible with it. The LM3445 offers a high-power LED illuminated constant current that includes a bidirectional triac dim decoder. The dim decoder allows for extensive use of standard TRIAC dimming LED dimmers. The capability architecture of high frequencies allows the use of small external passive components. The LM3445 includes a voltage divider circuit to ensure that the current is allowed to operate correctly while the line voltage is low, allowing the triac to fire correctly. Passive PFC circuitry, ensuring the best power factor currently available for the period line directly from the drawing, and provides a constant positive voltage buck regulator. Other features include thermal shutdown, current limiting, and V CC undervoltage lockout.

apply

• Vintage is suitable for triac dimming
• Solid-state lighting
• Industrial and commercial lighting
• Residential lighting