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  4. Step-Down (Buck) LED Drivers
  5. LT3595

Data Sheet
PDF
JP
User Guide
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Overview

Features and Benefits

  • 4.5V to 45V Input Supply Range
  • Up to 50mA LED Current per Channel
  • 100mA, 45V Internal Switches
  • 8% Relative LED Current Match at 20mA
  • 16 Independent LED Channels
  • 5000:1 True Color PWM™ Dimming Range
  • LEDs Disconnected in Shutdown
  • Internal Schottky Diodes
  • Low Quiescent Current
  • 2MHz Switching Frequency
  • RSET Pin Sets Master LED Current
  • Typical Efficiency: 92%
  • Open LED Detection and Thermal Protection
  • 56-Pin 5mm × 9mm × 0.75mm QFN Package

Product Details

The LT3595 is a high performance LED Driver designed to drive sixteen independent channels of up to 10 LEDs at currents up to 50mA. Series connection of the LEDs provides identical LED currents resulting in uniform brightness. Power switches, Schottky diodes, and compensation components are all internal, providing a small converter footprint and lower component cost. The high 2MHz switching frequency permits the use of tiny, low profi le inductors and capacitors. A fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltage.

A single external resistor sets the LED current for all sixteen channels, and dimming is then controlled for each channel by pulse width modulating the individual PWM pins. Relative current matching among the sixteen drivers is 8% and the PWM dimming range is 5000:1. The part is available in a 5mm x 9mm x 0.75mm 56-pin QFN package.

Applications

  • LED Video Billboards
  • LCD Televisions
  • Stadium and Advertising Displays

Product Categories

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Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

  • View All (4)
  • Data Sheet (1)
  • Reliability Data (1)
  • User Guide (1)
  • Technical Article (1)
    • Document Type

    Tools & Simulations

    LTspice

    LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

    To launch ready-to-run LTspice demonstration circuits for this part:

    Step 1: Download and install LTspice on your computer.

    Step 2: Click on the link in the section below to download a demonstration circuit.

    Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

    LTspice

    LTspice Simulations

    LT3595 Demo Circuit - 16 Channel Buck Mode LED Driver (32V to 10x 2.4V LEDs @ 50mA)

    Models for the following parts are available in LTspice:

    LT3595

    Product Recommendations

    LT3595 Companion Parts

    Recommended Related Parts

    Recommended Suggested Oscillator

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LT3595EUHH#PBF Material Declaration Reliability Data 56-Lead QFN (5mm x 9mm x 0.75mm w/ EP)
    LT3595EUHH#TRPBF Material Declaration Reliability Data 56-Lead QFN (5mm x 9mm x 0.75mm w/ EP)
    Wafer Fabrication Data R518 Reliability Data

    Support & Discussions

    LT3595 Contact ADI Technical Support »
    LT3595 Ask your question »
    LT3595 Contact ADI Technical Support » LT3595 Ask your question »

    Sample & Buy


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    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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