Overview

Features and Benefits

  • Up to 45V of LEDs × 50mA, 16-Channel LED Driver
  • Wide Input Range: 6V to 40V (4.5V to 13V, VIN Connected to INTVCC)
  • ±2.8% LED Current Matching at 20mA (Typ ±0.7%)
  • Up to 3000:1 True Color PWM Dimming Range
  • Single Resistor Sets LED Current (10mA to 50mA)
  • LED Current Regulated Even for PVIN > VOUT
  • Output Adapts to LED VF for Optimum Efficiency
  • Fault Flag + Protection for Open LED Strings
  • Protection for LED Pin to VOUT Short
  • Parallel Channels for Higher LED Current
  • Programmable LED Current Derating vs Temperature
  • Accurate Undervoltage Lockout Threshold with Programmable Hysteresis
  • Programmable Frequency (100kHz to 1MHz)
  • Synchronizable to an External Clock

Product Details

The LT3754 is a 16-channel LED driver with a step-up DC/DC controller capable of driving up to 45V of LEDs. Each channel contains an accurate current sink with ±2.8% current matching. Channels follow a master programmable current to allow between 10mA to 50mA of LED current per string. Channels can be paralleled for higher LED current. Output voltage adapts to variations in LED VF for optimum efficiency and open LED faults do not affect the operation of connected LED strings.

The LT3754 allows a PWM dimming range up to 3000:1 and an analog dimming range up to 25:1. Operating frequency can be programmed from 100kHz up to 1MHz using a single resistor or synchronized to an external clock.

Additional features include: programmable maximum VOUT for open LED protection, a fault flag for open LED, programmable LED current derating vs temperature, micropower shutdown and internal soft-start. The LT3754 is available in a thermally enhanced 5mm × 5mm 32-pin QFN Package.

Applications

  • Automotive, Notebook and TV Monitor Backlighting

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)

Tools & Simulations

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Models for the following parts are available in LTspice:

LT3754

Product Recommendations

LT3754 Companion Parts

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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.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
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.