LM3409HVMYX/NOPB

Overview

The LM3409HVMYX/NOPB is an automotive-grade P-FET buck controller designed for high-power LED lighting applications. It operates within a wide input voltage range up to 75V and supports output currents up to 1.5A. The device features adjustable switching frequency, precision dimming control via analog or PWM signals, and integrated thermal shutdown protection. Qualified under AEC-Q100 standards, it functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a compact MSOP-PowerPad-10 format, this IC provides efficient constant current regulation for robust LED driver designs.

Feature Summary

• Automotive-grade qualification ensuring reliability in demanding environments
• Supports both analog and PWM precision dimming control methods
• Integrated thermal shutdown protection for enhanced system safety
• Adjustable switching frequency allows optimization of external component size

Applications

• High-power automotive LED headlight systems
• LED fog light drivers
• Automotive interior ambient lighting circuits
• General high-voltage LED illumination modules

Procurement Notes

Verify the specific suffix 'HVMYX' against official Texas Instruments documentation to confirm the HV variant specifications and package type. Ensure that procurement channels provide genuine components with traceable manufacturing dates. Cross-reference the AEC-Q100 certification status directly with the manufacturer's latest release notes to guarantee compliance with automotive quality standards before finalizing orders.

Selection Notes

Select this component when designing LED drivers requiring input voltages up to 75V. It is suitable for applications needing precise current regulation with flexible dimming options. Consider the MSOP-PowerPad-10 package for space-constrained PCB layouts. Evaluate the thermal performance requirements against the integrated shutdown feature to ensure adequate heat dissipation in the target application environment.

Part Context

This part belongs to the LM3409 family of P-FET buck controllers from Texas Instruments. While standard LM3409 models support up to 42V, the HV variant extends the operational limit to 75V. This family is specifically engineered for non-isolated LED drive topologies, offering a cost-effective solution compared to complex isolated converters while maintaining high efficiency and precise current control for lighting applications.

Replacement Considerations

LM3409QMYX/NOPB serves as a lower voltage alternative within the same family.