LT3517
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LT3517

Full-Featured LED Driver with 1.5A Switch Current

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LTspice LT3517 Demo Circuit - 45V 1.5A Full-Featured Boost LED Driver (12V to 8x 3.4V LEDs @ 330mA) Download 3.00KB LTspice LT3517 - LED Driver IC Download 2.45 KB
Part Models 12
1ku List Price Starting From $3.25
Features
  • 5000:1 True Color PWM™ Dimming Ratio
  • 1.5A, 45V Internal Switch
  • 100mV High Side Current Sense
  • Open LED Protection
  • Adjustable Frequency: 250kHz to 2.5MHz
  • Wide Input Voltage Range:
    • Operation from 3V to 30V
    • Transient Protection to 40V
  • Operates in Boost, Buck Mode and Buck-Boost Mode
  • Gate Driver for PMOS LED Disconnect
  • Constant-Current and Constant-Voltage Regulation
  • CTRL Pin Provides 10:1 Analog Dimming
  • Low Shutdown Current: <1μA
  • Available in (4mm × 4mm) 16-Lead QFN and 16-Pin TSSOP Packages
Additional Details
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The LT3517 is a current mode DC/DC converter with an internal 1.5A, 45V switch specifically designed to drive LEDs. The LT3517 operates as a LED driver in boost, buck mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. Programmable switching frequency allows optimization of the external components for efficiency or component size. The switching frequency of LT3517 can be synchronized to an external clock signal. The LED current is externally programmable with a 100mV sense resistor. The external PWM input provides up to 5000:1 LED dimming. The CTRL pin provides further 10:1 dimming ratio.

The LT3517 is available in the tiny footprint 16-lead QFN (4mm × 4mm) and the 16-pin TSSOP packages. The LT3517 provides a complete solution for both constant-voltage and constant-current applications.

Applications

  • Display Backlighting
  • Automotive and Avionic Lighting
  • Illumination
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file View Data Sheet
Documentation View All Documentation
LTspice LT3517 Demo Circuit - 45V 1.5A Full-Featured Boost LED Driver (12V to 8x 3.4V LEDs @ 330mA) Download 3.00KB LTspice LT3517 - LED Driver IC Download 2.45 KB
Part Models 12
1ku List Price Starting From $3.25
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LT3517

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UPDATED 03/16/2017
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LT3517: Full-Featured LED Driver with 1.5A Switch Current Data Sheet

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UPDATED 07/03/2013
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LT3517: スイッチ電流が1.5Aのフル機能LEDドライバ データシート

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UPDATED 03/26/2018
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Documentation

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Video

2017-09-18

LT3518 Full-Featured LED Driver with 45V, 2.3A Switch Current - Video Product Brief

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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 Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT3517EFE#PBF 16-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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LT3517EFE#TRPBF 16-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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LT3517EUF#PBF 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT3517EUF#TRPBF 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT3517HFE#PBF 16-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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LT3517HFE#TRPBF 16-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT3517HUF#PBF 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT3517HUF#TRPBF 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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LT3517IFE#PBF 16-Lead TSSOP w/ EP external-link
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LT3517IFE#TRPBF 16-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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LT3517IUF#PBF 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LT3517IUF#TRPBF 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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Apr 6, 2022

- 22_0068

Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT3517EFE#PBF

PRODUCTION

LT3517EFE#TRPBF

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LT3517HFE#PBF

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LT3517HFE#TRPBF

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LT3517IFE#PBF

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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT3517EFE#PBF

PRODUCTION

LT3517EFE#TRPBF

PRODUCTION

LT3517HFE#PBF

PRODUCTION

LT3517HFE#TRPBF

PRODUCTION

LT3517IFE#PBF

PRODUCTION

LT3517IFE#TRPBF

PRODUCTION

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PCN22_0068_Form

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xls

Material_Report

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Delta Qualification Matrix

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Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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DC1279A

LT3517EUF | Boost LED Driver, 3V ≤ PVIN ≤ 40V, VLED up to 40V @ 330mA

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DC1279A

LT3517EUF | Boost LED Driver, 3V ≤ PVIN ≤ 40V, VLED up to 40V @ 330mA

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DC1279A
LT3517EUF | Boost LED Driver, 3V ≤ PVIN ≤ 40V, VLED up to 40V @ 330mA
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Product Detail

Demonstration Circuit 1279 is a full-featured, multitopology LED driver with 1.5A switch current featuring the LT3518. The board is optimized to drive a 330mA LED string with a total LED voltage between the input voltage and 40V in a boost topology. The input voltage range (VIN) is 3V to 30V, and the supply pin that powers the switcher (PVIN) has an input voltage range of 3V to 40V.


 


Resources

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DC1279A - Design File Download

718.00K

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PDF

DC1279A - Demo Manual Download

758.00K

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DC1279A - Schematic Download

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Evaluation Kits1

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DC1279A

LT3517EUF | Boost LED Driver, 3V ≤ PVIN ≤ 40V, VLED up to 40V @ 330mA
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.

spice tool Lt Spice

LT3517 Demo Circuit - 45V 1.5A Full-Featured Boost LED Driver (12V to 8x 3.4V LEDs @ 330mA) Download

3.00K

spice tool Lt Spice

LT3517 - LED Driver IC Download

2.45 K

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