LM3414SDX/NOPB

Overview

The LM3414SDX/NOPB is a single-channel constant current buck LED driver from Texas Instruments, housed in an 8-pin WSON package. It operates with an input voltage range of 4.5 V to 42 V and delivers up to 1 A output current. The device supports adjustable switching frequencies between 250 kHz and 1 MHz. It features integrated analog and PWM dimming capabilities, along with thermal shutdown protection. Designed for high efficiency, it eliminates the need for external current sensing resistors.

Feature Summary

• Integrated power switch eliminates external MOSFET requirements
• Supports both analog and pulse-width modulation dimming methods
• Operates without external current sensing resistors
• Includes thermal shutdown for enhanced system reliability

Applications

• General solid-state lighting fixtures
• LED downlights and spotlights
• Commercial linear lighting applications
• Automotive interior illumination systems

Procurement Notes

Verify the exact suffix configuration against official datasheets to ensure compatibility with specific packaging or temperature grade requirements. Confirm that the WSON-8 footprint matches your PCB layout constraints. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Ensure supply chain stability by checking current production status rather than relying on historical availability data.

Selection Notes

Select this component when designing buck topology drivers requiring integrated switching elements. It is suitable for applications needing precise constant current regulation without external sense resistors. Consider the 42 V maximum input limit and 1 A output capability during circuit design. Evaluate the thermal performance within the -40 C to +125 C operating range for your specific enclosure conditions.

Part Context

This device belongs to the LM3414 series of LED drivers. It shares functional similarities with other members like the LM3414SD/NOPB, differing primarily in reel packaging specifications. The series is designed for high-efficiency LED illumination, offering flexibility in frequency adjustment and dimming control for various lighting standards.

Replacement Considerations

LM3414SD/NOPB serves as a direct alternative with identical electrical characteristics but different standard packaging options.