LT3932HUFD#PBF

LED Driver IC Overview

The LT3932HUFD#PBF is a synchronous step-down LED driver IC from Analog Devices, designed for high-efficiency lighting applications. It operates with an input voltage range of 3.6 V to 36 V and delivers up to 2 A of output current. The device supports switching frequencies between 200 kHz and 2 MHz, allowing for flexible filter component selection. It features adjustable output voltage and operates within a temperature range of -40°C to +150°C. Packaged in a QFN-28 (4x5 mm) surface-mount format, it integrates PWM dimming capabilities and open LED protection for robust performance.

LED Driver IC Feature Summary

• Synchronous buck topology ensures high conversion efficiency for LED string driving
• Wide input voltage range accommodates various power supply configurations
• Integrated PWM dimming control enables precise brightness adjustment
• Open LED protection safeguards the circuit against load disconnection faults

LED Driver IC Applications

• High-power LED street lighting fixtures
• Industrial area lighting systems
• Architectural accent lighting drivers
• General commercial illumination modules

LED Driver IC Procurement Notes

Verify the exact suffix designation when sourcing replacements, as variants like LT3932IUFD or LT3932HUFD-1 may differ in temperature ratings or internal configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure that the QFN-28 thermal pad soldering process meets industry standards for reliable heat dissipation during operation.

LED Driver IC Selection Notes

Select this component when a wide input voltage range up to 36 V is required for single-string LED applications. The adjustable frequency feature allows optimization of external inductor size versus switching losses. Consider the extended operating temperature range of +150°C for environments where standard industrial grades are insufficient. Verify that the 2 A continuous output current aligns with the target LED array specifications.

LED Driver IC Part Context

This part belongs to the LT3932 family of synchronous step-down LED drivers. It shares architectural similarities with models like the LT3932IUFD but differs in specific operational parameters such as maximum junction temperature. The series is characterized by its ability to drive multiple LEDs in series from a variety of input sources while maintaining constant current regulation.

LED Driver IC Replacement Considerations

LT3932IUFD#PBF

LED Driver IC FAQ

What is the maximum operating junction temperature for the LT3932HUFD#PBF?

The maximum operating temperature is +150°C, which distinguishes it from lower-grade variants in the same family.

Does the LT3932HUFD#PBF support analog dimming?

No, the datasheet specifies PWM dimming as the supported control method for brightness adjustment.