LT3932IUFD#TRPBF

LED Driver IC Overview

The LT3932IUFD#TRPBF is a synchronous step-down LED driver IC from Analog Devices, designed for high-efficiency lighting applications. It features a wide input voltage range of 3.6 V to 36 V and delivers up to 2 A of output current. The device operates at adjustable switching frequencies between 200 kHz and 2 MHz, allowing for optimization of external component size and efficiency. Packaged in a compact 28-lead QFN (4x5 mm) format, it supports both analog and PWM dimming methods. The IC includes integrated protection features such as open LED detection and thermal regulation, ensuring reliable operation across an extended temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Synchronous buck topology provides high conversion efficiency for LED string driving
• Supports combined analog and pulse-width modulation dimming for precise brightness control
• Integrated open LED protection safeguards the system against fault conditions
• Wide input voltage capability accommodates various power supply architectures

LED Driver IC Applications

• General LED lighting systems
• Display backlight drivers
• Indicator lighting circuits

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF confirms the tape-and-reel packaging variant distinct from tube-packaged equivalents. Confirm that the I-grade designation meets the required automotive or industrial temperature specifications for your application environment. Cross-reference the manufacturer part number with official distributor catalogs to ensure authenticity and traceability, as availability may vary by region.

LED Driver IC Selection Notes

Select this component when a single-channel, high-current synchronous buck driver is required for LED strings. Ensure the input voltage source falls within the 3.6 V to 36 V operational window. Consider the 28-QFN package footprint for PCB layout constraints. Verify that the required switching frequency aligns with available inductor and capacitor values to meet EMI and efficiency targets.

LED Driver IC Part Context

This part belongs to the LT3932 family of synchronous step-down LED drivers. It shares core architectural similarities with variants like the LT3932EUFD-1#PBF but differs in grade and packaging. The IUFD suffix indicates an industrial temperature grade and tape-and-reel delivery, distinguishing it from commercial or tube-packaged versions within the same functional series.

LED Driver IC Replacement Considerations

LT3932IUFD-1#PBF

LED Driver IC FAQ

What dimming methods are supported by the LT3932IUFD#TRPBF?

The device supports both analog dimming and pulse-width modulation (PWM) dimming for flexible brightness control.

Does the LT3932IUFD#TRPBF include protection against LED faults?

Yes, the IC integrates open LED protection to detect and respond to disconnected or failed LED strings.