LM3402HVMM/NOPB

Overview

The LM3402HVMM/NOPB is a high-voltage, constant current LED driver IC manufactured by Texas Instruments. It utilizes a buck topology to regulate current for single-channel LED applications. The device supports an input voltage range from 6V to 75V and delivers a maximum output voltage of 73V with a channel current of 500mA. It operates at a switching frequency up to 1MHz and features PWM dimming control. The component is housed in an 8-VSSOP package and functions within a junction temperature range of -40°C to 125°C.

Feature Summary

• Provides precise constant current regulation for driving LEDs
• Supports high-voltage inputs up to 75V for flexible system design
• Enables digital brightness control via PWM dimming interface

Applications

• General LED lighting systems
• Industrial illumination fixtures
• Automotive exterior lighting components

Procurement Notes

Verify the specific suffix designation when ordering, as it indicates packaging variations such as tape and reel quantities. Confirm RoHS compliance status relative to project requirements, noting that earlier revisions may differ. Ensure the selected package matches the PCB footprint specifications exactly to avoid assembly errors during manufacturing integration.

Selection Notes

Select this component for designs requiring high input voltage tolerance without external level shifting. Evaluate thermal management needs given the VSSOP package constraints at full load. Compare against lower voltage variants if the supply rail does not exceed standard limits. Consider the internal switch capability to simplify bill of materials by reducing external component count.

Part Context

This part belongs to the LM3402 family of LED drivers, which are designed for efficient power conversion in lighting applications. The HV variant specifically addresses higher voltage input scenarios common in automotive and industrial sectors. It serves as a direct replacement for non-RoHS versions like the LM3402HVMM, maintaining functional equivalence while adhering to updated environmental standards.

Replacement Considerations

The LM3402HVMM/NOPB serves as the direct RoHS-compliant substitute for the discontinued LM3402HVMM. Both parts share identical electrical characteristics and pinouts, allowing for drop-in replacement in existing designs without circuit modification.