LT3754
LT3754
RECOMMENDED FOR NEW DESIGNS16-Channel × 50mA LED Driver
- Part Models
- 4
- 1ku List Price
- Starting From $6.42
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Overview
- 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
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
Documentation
Data Sheet 1
User Guide 1
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 |
|---|---|---|---|
| LT3754EUH#PBF | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) | ||
| LT3754EUH#TRPBF | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) | ||
| LT3754IUH#PBF | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) | ||
| LT3754IUH#TRPBF | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jan 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products |
||
| LT3754EUH#PBF | PRODUCTION | |
| LT3754EUH#TRPBF | PRODUCTION | |
| LT3754IUH#PBF | PRODUCTION | |
| LT3754IUH#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
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|---|---|---|
| Circuit Monitors 1 | ||
| LT2940 | PRODUCTION | Power and Current Monitor |
| Digital to Analog Converters (DACs) 1 | ||
| LTC2634 | PRODUCTION | Quad 12-/10-/8-Bit Rail-to-Rail DACs with 10ppm/°C Reference |
| Pulse-Width Modulation (PWM) & Pulse Generators 1 | ||
| LTC6992 | TimerBlox: Voltage-Controlled Pulse Width Modulator (PWM) | |
| Temperature Sensors 1 | ||
| LTC2991 | RECOMMENDED FOR NEW DESIGNS | Octal I2C Voltage, Current, and Temperature Monitor |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LT3754
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.
Evaluation Kits
LT3754EUH Demo Board | 16-Channel Boost LED Driver, 20V ≤ VIN ≤ 28V, VLED = 55V @ 50mA