LT3952AEFE#PBF

LED Driver IC Overview

The LT3952AEFE#PBF is a high-efficiency, current-mode step-up DC/DC converter designed for driving high-power LEDs. It features an internal 60V, 80mΩ DMOS power switch and supports input voltages from 3V to 42V. The device delivers up to 4A of output current with a switching frequency range of 215kHz to 3MHz. It operates within a junction temperature range of -40°C to 125°C and utilizes a 28-lead TSSOP package with an exposed pad for thermal management.

LED Driver IC Feature Summary

• Integrated 60V, 80mΩ DMOS power switch for efficient step-up conversion
• Supports analog and PWM dimming control methods
• Wide input voltage range accommodating various power supply configurations
• High switching frequency capability up to 3MHz for compact external component sizing

LED Driver IC Applications

• Automotive LED lighting systems
• High-power LED backlighting applications
• Industrial LED illumination drivers

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS standards before procurement. Confirm the FE package variant matches the required 28-TSSOP footprint with exposed pad. Ensure the supplier provides valid traceability documentation for automotive-grade components if applicable. Cross-reference the datasheet revision to ensure compatibility with existing design specifications.

LED Driver IC Selection Notes

Select this component when a single-channel boost topology is required for high-current LED strings. Consider the 60V switch rating for headroom against inductive spikes. Evaluate the 215kHz to 3MHz frequency range against EMI constraints and inductor size requirements. Verify that the 4A continuous current capability meets the target LED array drive specifications without exceeding thermal limits in the chosen enclosure.

LED Driver IC Part Context

This part belongs to the LT3952 family of LED drivers, representing an improved version over earlier iterations. It shares architectural similarities with other Analog Devices boost converters but is optimized specifically for high-power LED applications requiring precise current regulation and wide input voltage tolerance.

LED Driver IC Replacement Considerations

Direct substitutes include the LT3952AIFE#TRPBF for tape-and-reel packaging needs. Other compatible parts in the series may offer different pinouts or thermal packages; verify electrical equivalence and mechanical fit before substitution.