LT3590
Info: : PRODUCTION
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LT3590

48V Buck Mode LED Driver in SC70 and 2mm × 2mm DFN

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $1.71
Features
  • 4.5V to 55V Input Voltage Range
  • Up to 50mA LED Current
  • 80mA, 55V Switch
  • Internal Schottky Diode
  • 15µA Supply Current in Shutdown
  • 500µA Supply Current Operating, Not Switching
  • Switching Frequency: 850kHz
  • 200mV Feedback Voltage with ±5% Accuracy
  • CTRL Input Performs Dimming and Shutdown
  • 91% Efficiency (10 LEDs, 50mA)
  • Requires Only 1µF Output Capacitor
  • 8-Lead SC70 Package
  • 6-Lead 2mm × 2mm DFN Package
Additional Details
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The LT3590 is a fixed frequency buck mode converter specifically designed to drive up to 10 LEDs in series from a 48V DC source. Series connection of the LEDs provides identical LED currents of up to 50mA, resulting in uniform brightness and eliminating the need for ballast resistors. A fixed frequency, current mode architecture results in stable operation over a wide range of input voltage and output voltage.

The high switching frequency of 850kHz permits the use of tiny, low profile inductors and capacitors. A single pin performs both shutdown and accurate LED dimming control. The power switch, Schottky diode and control circuitry are all contained inside a space saving SC70 package or 2mm × 2mm DFN package to allow a small converter footprint and lower parts cost.

Applications

  • LED Fixed Signage
  • Traffic Signs
  • Neon Sign Replacement
Part Models 4
1ku List Price Starting From $1.71

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT3590EDC#TRMPBF
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LT3590EDC#TRPBF
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LT3590ESC8#TRMPBF
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LT3590ESC8#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC1166A

LT3590EDC Demo Board | Buck Mode LED Driver, Tiny Package, 4.5V ≤ VIN ≤ 54V, VLED up to 40V at 50mA

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DC1166A

LT3590EDC Demo Board | Buck Mode LED Driver, Tiny Package, 4.5V ≤ VIN ≤ 54V, VLED up to 40V at 50mA

LT3590EDC Demo Board | Buck Mode LED Driver, Tiny Package, 4.5V ≤ VIN ≤ 54V, VLED up to 40V at 50mA

Product Detail

Demonstration circuit 1166 is a 48V Buck-Mode LED Driver featuring the LT3590. The LT3590 is a fixed frequency buck mode converter specifically designed to drive up to 10 LEDs in series at up to 50mA LED current. Series connection of the LEDs results in uniform LED brightness, eliminating the need for ballast resistors. The demo board targets 48V power applications but has a wide 4.5V to 54V (55V absolute max) input voltage range.

Tools & Simulations

Tools & Simulations 1

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.

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