LT3754 Series

16-Channel × 50mA LED Driver

Catalog

16-Channel × 50mA LED Driver

Part	Applications	Voltage - Supply (Min) [Min]	Topology	Dimming	Mounting Type	Current - Output / Channel	Number of Outputs	Type	Supplier Device Package	Frequency [Min]	Frequency [Max]	Voltage - Supply (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]
Analog Devices LT3754IUH#PBF	Backlight	6 V	Step-Up (Boost)	Analog PWM	Surface Mount	50 mA	16	DC DC Controller	32-QFN (5x5)	100 kHz	1 MHz	40 V	-40 °C	125 ¯C
Analog Devices LT3754IUH#TRPBF	Backlight	6 V	Step-Up (Boost)	Analog PWM	Surface Mount	50 mA	16	DC DC Controller	32-QFN (5x5)	100 kHz	1 MHz	40 V	-40 °C	125 ¯C
Analog Devices LT3754EUH#TRPBF	Backlight	6 V	Step-Up (Boost)	Analog PWM	Surface Mount	50 mA	16	DC DC Controller	32-QFN (5x5)	100 kHz	1 MHz	40 V	-40 °C	125 ¯C

Catalog

16-Channel × 50mA LED Driver

Key Features

• Up to 45V of LEDs × 50mA, 16-Channel LED Driver

• Wide Input Range: 6V to 40V (4.5V to 13V, VINConnected 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 VFfor Optimum Efficiency

• Fault Flag + Protection for Open LED Strings

• Protection for LED Pin to VOUTShort

• 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

Description

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 VFfor 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 VOUTfor 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.ApplicationsAutomotive, Notebook and TV Monitor Backlighting