LT3745IUJ

Description：IC LED DRVR CTRLR PWM 75MA 40QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:bd255bb02065 Category: LED Drivers IC Brand: Analog Devices Inc.

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Product introduction

LT3745IUJ is listed in the LED Driver IC range at ChipApex. The manufacturer field lists Analog Devices Inc.. Its product description is IC LED DRVR CTRLR PWM 75MA 40QFN. Review the specifications below when checking this part for your BOM.

LED Driver IC specifications for LT3745IUJ

Description：IC LED DRVR CTRLR PWM 75MA 40QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Type：DC DC Controller
Topology：Step-Down (Buck)
Internal Switch(s)：No
Number of Outputs：16
Voltage - Supply (Min)：6V
Voltage - Supply (Max)：55V
Voltage - Output：36V
Current - Output / Channel：75mA
Frequency：200kHz ~ 1MHz
Dimming：PWM
Applications：Backlight, Signage
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：40-WFQFN Exposed Pad
Supplier Device Package：40-QFN (6x6)
Grade：-
Qualification：-

LED Driver IC datasheet and documents for LT3745IUJ

LT3745IUJ

LED Driver IC Overview

The LT3745IUJ is a 16-channel LED driver IC with an integrated 55V buck controller, manufactured by Analog Devices Inc. It supports up to 75mA per channel at 36V output voltage. The device operates on a step-down (buck) topology and features PWM dimming control. It functions within a supply voltage range of 6V to 55V and includes no internal switches. The component is housed in a 40-WFQFN package with exposed pad, measuring 6x6 mm. Operating frequency ranges from 200kHz to 1MHz, and the junction temperature rating spans -40°C to 125°C.

LED Driver IC Feature Summary

Integrates a 16-channel LED driver with a high-voltage buck controller for simplified design
Supports independent current regulation for each of the 16 channels
Enables precise light control through dedicated PWM dimming input

LED Driver IC Applications

LED backlighting systems
Signage illumination
High-power LED arrays

LED Driver IC Procurement Notes

Verify the specific suffix against official documentation to confirm packaging type and tape/reel specifications. Ensure the part number matches the required operating temperature range and pinout configuration for your PCB layout. Cross-reference the datasheet revision date to confirm compliance with current material declarations and assembly notifications provided by Analog Devices Inc.

LED Driver IC Selection Notes

Select this component when designing circuits requiring independent control of multiple LED strings powered by a single buck converter. It is suitable for applications demanding high efficiency and low ripple current. Consider the thermal performance of the QFN package and ensure adequate copper area for heat dissipation during the design phase.

LED Driver IC Part Context

The LT3745 belongs to the LT3745 family of LED drivers designed for high-performance lighting applications. It combines power management and LED driving capabilities into a single solution. This integration reduces component count and board space compared to discrete designs using separate controllers and drivers.