LT3746EUHH#PBF

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Analog Devices

LED DRIVER 18 SEGMENT 550UA SUPPLY CURRENT 56-PIN QFN EP TUBE

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DocumentsR548 Reliability Data Datasheet

LT3746EUHH#PBF

Active

Analog Devices

LED DRIVER 18 SEGMENT 550UA SUPPLY CURRENT 56-PIN QFN EP TUBE

Deep-Dive with AI

DocumentsR548 Reliability Data Datasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LT3746EUHH#PBF

Applications	Backlight, Signage
Current - Output / Channel	30 mA
Dimming	PWM
Frequency [Max]	1.05 MHz
Frequency [Min]	205 Hz
Internal Switch(s)	False
Mounting Type	Surface Mount
Number of Outputs	32
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Package / Case	56-WFQFN Exposed Pad
Supplier Device Package	56-QFN (5x9)
Topology	Step-Down (Buck)
Type	DC DC Controller
Voltage - Supply (Max) [Max]	55 V
Voltage - Supply (Min) [Min]	6 V

LT3746 Series

32-Channel 20mA LED Driver with Buck Controller

Part	Package / Case	Internal Switch(s)	Type	Voltage - Supply (Max) [Max]	Frequency [Min]	Frequency [Max]	Topology	Dimming	Supplier Device Package	Applications	Current - Output / Channel	Number of Outputs	Voltage - Supply (Min) [Min]	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]
Analog Devices LT3746EUHH#PBF	56-WFQFN Exposed Pad		DC DC Controller	55 V	205 Hz	1.05 MHz	Step-Down (Buck)	PWM	56-QFN (5x9)	Backlight Signage	30 mA	32	6 V	Surface Mount	-40 °C	125 ¯C

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

LT3746 Series

The LT3746 integrates a 32-channel LED driver with a 55V buck controller. The LED driver lights up to 30mA/13V 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 TTL/CMOS logic.The LT3746 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, skew-balanced, cascadable serial data interface makes the chip extremely suitable for large screen LCD dynamic backlighting and mono-, multi-, full-color LED displays.ApplicationsLarge Screen Display LED BacklightingMono-, Multi-, Full-Color LED DisplaysLED Billboards and Signboards