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LM3444 - AC-DC Offline LED Driver

Datasheet Summary

Description

The LM3444 is an adaptive constant off-time AC/DC buck (step-down) constant current controller that provides a constant current for illuminating high power LEDs.

The high-frequency capable architecture allows the use of small external passive components.

Features

  • 1.

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Datasheet Details

Part number LM3444
Manufacturer Texas Instruments
File Size 1.41 MB
Description AC-DC Offline LED Driver
Datasheet download datasheet LM3444 Datasheet
Additional preview pages of the LM3444 datasheet.

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Full PDF Text Transcription

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3444 SNVS682D – NOVEMBER 2010 – REVISED DECEMBER 2015 LM3444 AC-DC Offline LED Driver 1 Features •1 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 Flicker at 120 Hz • Low-Profile 10-Pin VSSOP Package or 8-Lead SOIC Package • Patented Drive Architecture 2 Applications • Solid State Lighting • Industrial and Commercial Lighting • Residential Lighting SPACE Typical LM3444 LED Driver Application Circuit V+ D3 VBUCK BR1 C7 + D9 C10 R2 D4 D8 C9 + VLED C12 - R4 VAC Q1 D1 D2 C5 VLEDD10 Q3 LM34
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