LT3952AEFE#TRPBF

LED Driver IC Overview

The LT3952AEFE#TRPBF is a current mode step-up DC/DC converter featuring an internal 60V, 80mΩ DMOS power switch. Designed for high-power LED driving, it operates with a supply voltage range of 3V to 42V and delivers up to 4A output current. The device supports adjustable switching frequencies from 215kHz to 3MHz and includes analog and PWM dimming capabilities. It is housed in a 28-lead TSSOP package with an exposed pad, suitable for surface mount applications across a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates a high-voltage 60V DMOS power switch for efficient boost topology operation
• Supports both analog and pulse-width modulation (PWM) dimming methods for precise brightness control
• Features adjustable switching frequency ranging from 215kHz to 3MHz to optimize external component size
• Includes thermal regulation and cycle-by-cycle current limiting for robust protection

LED Driver IC Applications

• Automotive exterior lighting systems
• High-power LED backlighting modules
• Industrial LED illumination fixtures
• Portable high-lumen flashlights

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the 'A' grade designation matches performance requirements against standard variants. Check manufacturer documentation for RoHS compliance status and lead-free specifications. Ensure the 28-TSSOP-EP footprint aligns with PCB layout guidelines provided in the datasheet. Validate operating temperature ranges against environmental conditions.

LED Driver IC Selection Notes

Select this component for applications requiring high input voltage tolerance up to 42V and significant LED string drive capability. The integrated 60V switch allows driving multiple series-connected LEDs without external boosting components. Consider the 28-lead TSSOP package for thermal management needs due to the exposed pad design. Evaluate the 4A switch current limit against maximum LED load requirements. Choose based on the need for combined analog and digital dimming flexibility.

LED Driver IC Part Context

This part belongs to the LT3952 family of LED drivers from Analog Devices. It serves as an improved version of the original LT3952, offering enhanced efficiency and reliability. The series is characterized by its ability to handle high voltages and currents in a compact form factor, making it suitable for demanding lighting applications where space and thermal constraints are critical.

LED Driver IC Replacement Considerations

LT3952IFE#TRPBF is a documented variant within the same product line. Verify if the 'A' suffix denotes specific electrical parameter improvements or just manufacturing lot differences. Cross-reference pinouts and thermal characteristics to ensure compatibility during substitution.