LT3745IUJ#PBF

LED Driver IC Overview

The LT3745IUJ#PBF is a 16-channel LED driver controller manufactured by Analog Devices Inc. It operates with a supply voltage range of 6V to 55V and supports output voltages up to 36V. The device delivers 75mA per channel and features a switching frequency adjustable between 200kHz and 1MHz. It utilizes PWM dimming for brightness control and is housed in a 40-WFQFN (6x6mm) package with an exposed pad. The component functions as a buck DC-DC controller designed for high-efficiency LED applications.

LED Driver IC Feature Summary

• Integrates sixteen independent current channels for multi-zone LED driving
• Supports PWM dimming for precise brightness regulation
• Operates as a buck topology DC-DC controller
• Features adjustable switching frequency for EMI optimization

LED Driver IC Applications

• LED backlight systems
• Digital signage displays

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the 40-QFN package dimensions match your PCB footprint requirements. Ensure the input voltage range of 6V to 55V aligns with your system power rails. Check for any recent PCN notifications regarding manufacturing site or material changes.

LED Driver IC Selection Notes

Select this component when designing multi-channel LED drivers requiring independent current control. It is suitable for applications needing wide input voltage ranges and flexible switching frequencies. Consider the thermal performance of the exposed pad QFN package for heat dissipation. Verify that the 75mA per channel output meets the total luminous flux requirements of the target display.

LED Driver IC Part Context

This part belongs to the LT3745 family of LED lighting driver ICs from Analog Devices. It is specifically engineered for high-density LED arrays where space efficiency and precise current matching are critical. The device integrates control logic for buck conversion, eliminating the need for external microcontrollers in basic configurations.

LED Driver IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices technical support for direct pin-compatible alternatives within the LT3745 series or newer generations.