LM3407MY/NOPB

Overview

The LM3407MY/NOPB is a constant current LED driver IC from Texas Instruments, designed for high-power LED applications. It utilizes a buck topology to regulate output current up to 350 mA. The device operates within an input voltage range of 4.5 V to 30 V and supports adjustable switching frequencies between 300 kHz and 1 MHz. Housed in an 8-lead MSOP PowerPAD package, it functions reliably across temperatures from -40°C to +125°C.

Feature Summary

• Provides precise constant current regulation for high-power LEDs
• Integrates a floating high-side N-channel power switch
• Supports PWM dimming control via the DIM pin

Applications

• General illumination lighting systems
• Automotive interior and exterior lighting
• Portable battery-powered LED devices

Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free and RoHS compliance as per manufacturer specifications. Confirm the 'MY' suffix corresponds to the MSOP-PowerPad-8 package variant. Ensure the ordering part number matches the exact thermal and electrical requirements for the target design before procurement.

Selection Notes

Select this component when a compact solution for driving single or series-connected high-power LEDs is required. It is suitable for designs needing a wide input voltage range and adjustable frequency to optimize external component size. Consider the thermal performance of the PowerPAD package for heat dissipation needs.

Part Context

This part belongs to the LM3407 family of LED drivers. It is distinct from the LM3406, which offers higher current capacity, and the LM3409, which supports higher input voltages. The MY/NOPB designation specifies the package type and environmental compliance within the broader product line.

Replacement Considerations

Direct substitutes include LM3407MYX/NOPB, which shares identical electrical characteristics but differs in reel packaging. Other variants like LM3407MY/NOPB are functionally equivalent.