LT3745EUJ-1#PBF

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LED DRIVER 550UA SUPPLY CURRENT 40-PIN QFN EP TUBE

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LT3745EUJ-1#PBF

Active

Analog Devices

LED DRIVER 550UA SUPPLY CURRENT 40-PIN QFN EP TUBE

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DocumentsDatasheet R548 Reliability Data

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LT3745EUJ-1#PBF

Applications	Backlight, Signage
Current - Output / Channel	75 mA
Dimming	PWM
Frequency [Max]	1 MHz
Frequency [Min]	200 kHz
Internal Switch(s)	False
Mounting Type	Surface Mount
Number of Outputs	16
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Package / Case	40-WFQFN Exposed Pad
Supplier Device Package	40-QFN (6x6)
Topology	Step-Down (Buck)
Type	DC DC Controller
Voltage - Output	36 V
Voltage - Supply (Max) [Max]	55 V
Voltage - Supply (Min) [Min]	6 V

LT3745-1 Series

16-Channel 50mA LED Driver with Buck Controller

Part	Type	Voltage - Supply (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Dimming	Number of Outputs	Mounting Type	Current - Output / Channel	Package / Case	Applications	Frequency [Max]	Frequency [Min]	Supplier Device Package	Voltage - Supply (Min) [Min]	Topology	Voltage - Output
Analog Devices LT3745EUJ	DC DC Controller	55 V	-40 °C	125 ¯C	PWM	16	Surface Mount	75 mA	40-WFQFN Exposed Pad	Backlight Signage	1 MHz	200 kHz	40-QFN (6x6)	6 V	Step-Down (Buck)	36 V
Analog Devices LT3745IUJ-1#TRPBF	DC DC Controller	55 V	-40 °C	125 ¯C	PWM	16	Surface Mount	75 mA	40-WFQFN Exposed Pad	Backlight Signage	1 MHz	200 kHz	40-QFN (6x6)	6 V	Step-Down (Buck)	36 V
Analog Devices LT3745EUJ-1#PBF	DC DC Controller	55 V	-40 °C	125 ¯C	PWM	16	Surface Mount	75 mA	40-WFQFN Exposed Pad	Backlight Signage	1 MHz	200 kHz	40-QFN (6x6)	6 V	Step-Down (Buck)	36 V
Analog Devices LT3745IUJ-1#PBF	DC DC Controller	55 V	-40 °C	125 ¯C	PWM	16	Surface Mount	75 mA	40-WFQFN Exposed Pad	Backlight Signage	1 MHz	200 kHz	40-QFN (6x6)	6 V	Step-Down (Buck)	36 V
Analog Devices LT3745EUJ#TRPBF	DC DC Controller	55 V	-40 °C	125 ¯C	PWM	16	Surface Mount	75 mA	40-WFQFN Exposed Pad	Backlight Signage	1 MHz	200 kHz	40-QFN (6x6)	6 V	Step-Down (Buck)	36 V
Analog Devices LT3745EUJ-1#TRPBF	DC DC Controller	55 V	-40 °C	125 ¯C	PWM	16	Surface Mount	75 mA	40-WFQFN Exposed Pad	Backlight Signage	1 MHz	200 kHz	40-QFN (6x6)	6 V	Step-Down (Buck)	36 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 15.19
		10	$ 10.84
		25	$ 9.72
		100	$ 8.48
		250	$ 7.87
		500	$ 7.50
		1000	$ 7.38

Description

General part information

LT3745-1 Series

The LT3745-1 integrates a 16-channel LED driver with a 55V buck controller. The LED driver lights up to 75mA/36V of LEDs in series per channel, and the buck controller generates an adaptive bus voltage supplying the parallel LED strings. Each channel has individual 6-bit dot correction current adjustment and 12-bit grayscale PWM dimming. Both dot correction and grayscale are accessible via a serial data interface in LVDS logic. A ±4% LED current matching and a 0.5μs minimum LED on-time can be achieved at 50mA per channel.The LT3745-1 performs full diagnostic and protection against open/short LED and overtemperature fault. The fault status is sent back through the serial data interface. The 30MHz fully buffered, cascadable LVDS serial data interface makes the chip extremely suitable for large screen LCD dynamic backlighting and mono-, multi-, full-color LED displays. The LT3745 uses a TTL/CMOS serial data interface instead of LVDS.ApplicationsLarge Screen Display LED BacklightingMono-, Multi-, Full-Color LED DisplaysLED Billboards and Signboards