LM3404MAX/NOPB

Overview

The LM3404MAX/NOPB is a constant current buck LED driver IC from Texas Instruments, designed for high-voltage applications. It operates with an input voltage range of 6V to 75V DC and delivers a regulated output current of 1A. The device features PWM dimming capability and integrates an internal switch. It utilizes a step-down topology and is housed in an 8-SOIC package. The component supports junction temperatures from -40°C to 125°C.

Feature Summary

• Supports wide input voltage range up to 75V DC
• Provides constant 1A output current regulation
• Enables precise brightness control via PWM dimming

Applications

• High-power LED lighting systems
• Automotive exterior lighting modules
• Industrial illumination fixtures

Procurement Notes

Verify the exact suffix against official Texas Instruments documentation to confirm pinout and thermal specifications. Ensure the ordering part number matches the required package variant. Cross-reference datasheet revisions to validate electrical characteristics before integration into final designs.

Selection Notes

Select this component for designs requiring high input voltage tolerance and fixed 1A current drive. Consider the 8-SOIC package constraints for thermal management. Verify compatibility with system PWM frequencies for dimming requirements. Evaluate board space against alternative packages if higher density is needed.

Part Context

This part belongs to the LM3404HV series, which extends the standard LM3404 capabilities to handle higher input voltages. It serves as a core power management solution for driving high-brightness LEDs in environments where standard low-voltage drivers are insufficient. The series emphasizes robustness and simplicity in LED driver circuit design.

Replacement Considerations

LM3404HVMA/NOPB is listed as a parameter-equivalent substitute.