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LM3445 - TRIAC Dimmable Offline LED Driver

Datasheet Summary

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.

Features

  • 1 TRIAC Dim Decoder Circuit for LED Dimming.

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Datasheet preview – LM3445

Datasheet Details

Part number LM3445
Manufacturer Texas Instruments
File Size 1.44 MB
Description TRIAC Dimmable Offline LED Driver
Datasheet download datasheet LM3445 Datasheet
Additional preview pages of the LM3445 datasheet.

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Full PDF Text Transcription

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design LM3445 SNVS570M – JANUARY 2009 – REVISED NOVEMBER 2015 LM3445 TRIAC Dimmable Offline LED Driver 1 Features •1 TRIAC Dim Decoder Circuit for LED Dimming • Application Voltage Range 80 VAC to 277 VAC • Capable of Controlling LED Currents Greater Than 1 A • Adjustable Switching Frequency • Low Quiescent Current • Adaptive Programmable Off-Time Allows for Constant Ripple Current • Thermal Shutdown • No 120-Hz Flicker • Low Profile 10-Pin VSSOP Package or 14-Pin SOIC • Patented Drive Architecture 2 Applications • Retro Fit TRIAC Dimming • Solid State Lighting • Industrial and Commercial Lighting • Residential Lighting Typical LM3445 LED Driver Application Circuit BR1 TRIAC DIMMER VAC
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