LT3952IFE

LED Driver IC Overview

The LT3952IFE is a current mode step-up DC/DC converter featuring an internal 60V, 4A DMOS power switch. Designed for high-power LED applications, it operates with an input voltage range of 3V to 42V and supports switching frequencies from 200kHz to 3MHz. The device delivers up to 60V output voltage and includes PWM dimming capabilities alongside open LED protection. It is housed in a 28-lead TSSOP package with an exposed pad, suitable for surface mount installation across industrial temperature ranges.

LED Driver IC Feature Summary

• Integrates a high-voltage 60V DMOS power switch capable of delivering 4A continuous current
• Supports wide input voltage operation from 3V to 42V for flexible power supply configurations
• Features programmable switching frequency ranging from 200kHz to 3MHz for optimized efficiency
• Includes built-in open LED protection and PWM dimming control functionality

LED Driver IC Applications

• High-power LED lighting systems
• Industrial illumination drivers
• Automotive exterior lighting modules
• General boost converter topologies requiring high current

LED Driver IC Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches required thermal and electrical specifications. Check for obsolescence status as older revisions may be discontinued. Ensure ESD handling protocols are followed during storage and assembly. Validate that the TSSOP-28 package aligns with PCB footprint requirements before procurement.

LED Driver IC Selection Notes

Select this component when designing boost converters requiring high output voltage and significant current drive. Consider the 200kHz to 3MHz frequency range for balancing efficiency and passive component size. Evaluate thermal performance due to the internal switch dissipation. Ensure input voltage stays within the 3V to 42V operational window. Verify compatibility with external feedback networks for precise current regulation.

LED Driver IC Part Context

The LT3952 belongs to Analog Devices' portfolio of high-voltage LED driver ICs. It succeeds earlier Linear Technology designs focused on robust power management. The part integrates power switching and control logic into a single compact package. This integration reduces external component count compared to discrete solutions. It represents a specialized solution for constant current LED driving applications.

LED Driver IC Replacement Considerations

LT3952AHFE#PBF serves as a verified alternative variant within the same family. Both parts share identical core electrical characteristics and pinout configurations. Verify package compatibility when substituting between different suffix designations. Confirm that any environmental or reliability specifications meet project requirements.