LM3402HVMR/NOPB

Overview

The LM3402HVMR/NOPB is a constant current buck LED driver IC from Texas Instruments. It operates with an input voltage range of 6 V to 75 V and delivers a regulated output current of 500 mA. The device supports PWM dimming and features an adjustable switching frequency from 10 kHz to 1 MHz. It utilizes an SO-PowerPad-8 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides constant current regulation for single-channel LED loads
• Supports high-frequency PWM dimming control
• Integrates internal power switch for compact design

Applications

• General LED lighting systems
• Automotive interior illumination
• Portable lighting devices

Procurement Notes

Verify the specific suffix 'NOPB' confirms RoHS compliance and absence of lead-based materials. Confirm the 'MR' designation corresponds to the SO-PowerPad-8 tape and reel packaging format. Ensure the component matches the exact manufacturer part number to avoid pinout or electrical specification mismatches during integration.

Selection Notes

Select this component when a wide input voltage range up to 75 V is required for buck topology applications. It is suitable for designs needing precise 500 mA current regulation without external sense resistors for basic operation. Consider thermal management requirements due to the integrated switch in the small outline package.

Part Context

This part belongs to the LM3402HV series, designed for high-voltage LED driving applications. It serves as a non-isolated DC-DC converter solution. The device simplifies design by integrating the controller and power MOSFET into a single package, reducing external component count compared to discrete solutions.

Replacement Considerations

• LM3402HVMM/NOPB