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Triac Dimmable Offline LED Driver

Triac Dimmable Offline LED Driver - LM3445

Design kits & evaluation modules (3)

Reference designs

230 V in to 180 V out at 200 mA constant-current LED driver reference design

This reference design is a low-side Buck (the output voltage is referenced to the positive DC input (+Vin node), not to the GND node). The controller drives a LED string up to 180V with 200mA constant current. The low-side Buck topology simplifies the schematic thanks to direct-driving of the FET (...)

View the Important Notice for reference designs covering authorized use, intellectual property matters and disclaimers.

Description Part Number Company Tool Type
120V AC input and 24.5V output LED Driver PMP7770 Texas Instruments Reference designs
230 Vac Off-line Triac Dimmer Retrofit with 6 LEDs Reference Design LM3445-REF Texas Instruments Reference designs
230V AC input to 23V,0.42A Flyback LED Driver PMP7752 Texas Instruments Reference designs
Forward converter with Universal input driving 2x6 LEDs PMP7762 Texas Instruments Reference designs
LM3445 – 220VAC, 7W Dimmable Isolated PMP7751 Texas Instruments Reference designs
Non-isolated Dimmable LED Driver with improved line regulation PMP4327A Texas Instruments Reference designs

WEBENCH® Designer LM3445

  V in Lower V in Upper
110.0 ≤  V  V ≤ 270.0
Ambient Temp  °C ≤ 125°C
Light Output (optional)  Lumens