LT3754IUH#PBF

LED Driver IC Overview

The LT3754IUH#PBF is a 16-channel LED driver featuring an integrated step-up DC/DC controller. It supports driving up to 45V of LEDs with each channel providing an accurate current sink of 50mA. The device operates on a supply voltage range of 6V to 40V and offers a switching frequency between 100kHz and 1MHz. It accepts both analog and PWM dimming inputs for brightness control. The component is housed in a 32-lead QFN (5x5mm) package with an exposed pad for thermal management.

LED Driver IC Feature Summary

• Integrates a step-up DC/DC controller with 16 independent high-side current sinks
• Supports flexible dimming via analog voltage or pulse-width modulation signals
• Provides precise constant current regulation across multiple LED channels
• Designed for efficient thermal dissipation through an exposed pad package

LED Driver IC Applications

• LED display backlights
• General LED lighting systems
• Indicator light arrays

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm that the 32-QFN package dimensions match the target PCB footprint. Ensure the input power supply can handle the minimum 6V requirement and that the LED string voltage does not exceed the controller's maximum output capability during operation.

LED Driver IC Selection Notes

Select this component for designs requiring multi-channel LED control with boost topology. It is suitable where space is limited due to the compact QFN form factor. Consider the 50mA per channel limit when determining total load capacity. Verify compatibility with available dimming signal sources before finalizing the design.

LED Driver IC Part Context

This part belongs to the LT3754 series of LED drivers from Analog Devices. It is distinct from other series like the LT3755, which focuses on single-channel high-power applications. The LT3754 specifically targets multi-channel scenarios requiring uniform current distribution and integrated boost conversion capabilities.

LED Driver IC Replacement Considerations

Direct substitutes within the same family include variants with different temperature grades or packaging options. Cross-referencing pin-to-pin compatibility is essential when considering alternative manufacturers. Verify that any replacement maintains the 16-channel architecture and similar electrical characteristics.