LT3932IUFD#PBF

LED Driver IC Overview

The LT3932IUFD#PBF is a synchronous step-down LED driver IC from Analog Devices Inc., 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 switching frequencies between 200 kHz and 2 MHz, allowing for compact external component selection. It supports analog and PWM dimming methods with a 100:1 dimming ratio. Packaged in a 28-lead QFN (4 mm x 5 mm) exposed pad package, it ensures reliable thermal performance across an operating temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates a high-side N-channel power switch for efficient synchronous buck conversion
• Supports both analog and pulse-width modulation (PWM) dimming control inputs
• Includes internal frequency compensation and soft-start functionality
• Features comprehensive protection mechanisms including over-current, over-voltage, and thermal shutdown

LED Driver IC Applications

• General LED lighting fixtures
• Display backlighting systems
• Industrial illumination equipment

LED Driver IC Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and functional variations. Ensure the procurement channel provides valid RoHS compliance certificates. Cross-reference the manufacturer part number with authorized distributor listings to avoid counterfeit components. Confirm that the requested quantity matches the standard tube packaging specifications provided in the datasheet.

LED Driver IC Selection Notes

Select this component when a single-channel, high-current LED driver is required within a 36 V input system. The choice depends on the need for precise current regulation and wide dimming capabilities. Evaluate the thermal requirements of the QFN package against the PCB layout constraints. Consider the operating frequency range to optimize inductor size and efficiency for the specific application load.

LED Driver IC Part Context

This part belongs to the LT3932 family of monolithic synchronous step-down LED drivers. It shares architectural similarities with other Linear Technology-derived LED controllers but is distinct in its specific voltage ratings and package configuration. The series is engineered for applications requiring high reliability and compact form factors in professional lighting designs.

LED Driver IC Replacement Considerations

Direct replacements must match the 2 A current rating, 36 V maximum input, and 28-QFN package. Verify compatibility of dimming interfaces and switching frequency ranges. Consult Analog Devices for qualified alternatives if exact pin-to-pin substitution is required.