LT3745IUJ-1#PBF

LED Driver IC Overview

The LT3745IUJ-1#PBF is a DC-DC controller and LED driver IC from Analog Devices Inc., housed in a 40-WFQFN (6x6 mm) exposed pad package. It features 16 output channels with a maximum current of 75mA per channel. The device operates on a buck topology with an input supply voltage range of 6V to 55V and supports a switching frequency between 200kHz and 1MHz. It provides PWM dimming control and is rated for an operating junction temperature of -40°C to 125°C.

LED Driver IC Feature Summary

• Integrates a buck converter controller with 16 independent LED drive channels
• Supports high-resolution PWM dimming for precise light intensity control
• Designed for wide input voltage ranges up to 55V
• Housed in a compact 40-pin QFN package with an exposed thermal pad

LED Driver IC Applications

• LED backlighting systems
• Commercial signage illumination
• High-density LED lighting arrays

LED Driver IC Procurement Notes

Verify the specific suffix '-1' against the official Analog Devices datasheet to confirm the exact electrical characteristics and pinout configuration, as variations within the LT3745 family may exist. Ensure the procurement source provides valid RoHS compliance documentation and original manufacturer traceability. Cross-reference the 40-QFN package marking with the latest product change notifications to avoid counterfeit or obsolete stock.

LED Driver IC Selection Notes

Select this component when designing multi-channel LED drivers requiring a single buck controller architecture. It is suitable for applications needing synchronized PWM dimming across multiple outputs. Consider the 75mA per channel limit and the 55V maximum input voltage when sizing external components. The exposed pad design requires careful thermal management on the PCB layout to maintain reliability within the specified temperature range.

LED Driver IC Part Context

This part belongs to the LT3745 series of LED lighting driver ICs manufactured by Analog Devices Inc. The series is designed for high-performance LED applications where efficient power conversion and precise current regulation are critical. The LT3745 family utilizes a buck topology to drive multiple LED strings, offering a compact solution for space-constrained designs in commercial and industrial lighting sectors.

LED Driver IC Replacement Considerations

LT3745IUJ#PBF is a related variant within the same family; verify if the non-suffixed version meets the specific application requirements.