LM3424MHX/NOPB

Overview

The LM3424MHX/NOPB is a constant current N-channel controller designed for LED lighting applications. It supports Boost, Buck, Flyback, and SEPIC topologies with an input voltage range of 4.5 V to 75 V. The device delivers up to 5 A output current and operates at switching frequencies from 100 kHz to 2 MHz. It features analog and PWM dimming capabilities along with thermal foldback protection. The component is housed in a HTSSOP-20 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports multiple LED driver topologies including Boost, Buck, Flyback, and SEPIC configurations.
• Enables precise control through integrated analog and pulse-width modulation dimming interfaces.
• Incorporates thermal foldback protection to manage junction temperature and ensure reliability.

Applications

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

Procurement Notes

Verify the specific suffix 'X' indicates tape and reel packaging when ordering. Confirm the device matches the required topology and current specifications for the target LED application. Ensure the operating voltage range aligns with the system power supply constraints.

Selection Notes

Select this controller for designs requiring high input voltage tolerance and flexible topology options. Consider the wide frequency range for optimizing magnetic component size. Evaluate the thermal management requirements given the high current capability and operating temperature range.

Part Context

This part belongs to the LM3424 series of LED drivers from Texas Instruments. It serves as a core component for designing efficient LED power stages. The device integrates control logic with gate driving capabilities for external N-channel MOSFETs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.