LT3754 - 16-Channel × 50mA LED Driver

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.

Features
  • 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
Typical Application

Applications
  • Automotive, Notebook and TV Monitor Backlighting
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT3754EUH#PBF5x5 QFN-32E$6.07$4.25
LT3754EUH#TRPBF5x5 QFN-32E$4.31
LT3754IUH#PBF5x5 QFN-32I$7.14$5.00
LT3754IUH#TRPBF5x5 QFN-32I$5.06
Demo Boards
Part NumberDescriptionPrice
DC1436ALT3754EUH Demo Board | 16-Channel Boost LED Driver, 20V ≤ VIN ≤ 28V, VLED = 55V @ 50mA$150.00
Datasheet
Reliability Data
Press Release
Related Product
LT3754 - 16-Channel × 50mA LED Driver
R518 - Reliability Data
驱动多达 16 个各含 10 个 50mA LED 的通道并采用 3000:1 True Color PWM 调光
LT3754 Footprints and Symbols