LM3414SD/NOPB

Overview

The LM3414SD/NOPB is a constant current buck LED driver from Texas Instruments, designed for high-efficiency lighting applications. It operates with an input voltage range of 4.5 V to 42 V and delivers a regulated output current of 1 A. The device supports adjustable switching frequencies between 250 kHz and 1 MHz, allowing optimization for size and efficiency. It features an integrated power switch and adjustable output voltage capabilities. The component is housed in an 8-WSON package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports analog and PWM dimming methods for flexible brightness control
• Eliminates the need for external current sensing resistors through internal regulation
• Includes thermal shutdown protection to ensure safe operation under fault conditions

Applications

• General LED lighting fixtures
• Commercial indoor lighting systems
• Automotive exterior lighting modules

Procurement Notes

Verify the specific ordering suffix to confirm the package type and tape/reel configuration. Ensure the procurement channel provides valid RoHS compliance documentation. Cross-reference the manufacturer part number against official distributor catalogs to avoid counterfeit components. Confirm that the supply chain source is authorized by Texas Instruments for genuine product assurance.

Selection Notes

Select this component when a single-channel constant current solution is required for common anode LED configurations. Consider the 42 V maximum input limit for system design constraints. Evaluate the thermal performance requirements relative to the WSON-8 package dissipation capabilities. Verify compatibility with the desired dimming interface, whether analog or pulse-width modulation.

Part Context

This part belongs to the LM3414 series of LED drivers, which are optimized for high-power LED applications. The series utilizes a buck topology to step down voltage while maintaining constant current. The LM3414 family is widely used in applications requiring efficient power conversion and precise current regulation for long-life LED sources.

Replacement Considerations

LM3414SDX/NOPB serves as a direct substitute variant within the same product line.