LM3450MT/NOPB

Overview

The LM3450MT/NOPB is a constant current LED driver IC from Texas Instruments, designed for AC/DC primary-side control in flyback and boost topologies. It operates with an input voltage range of 8.5 V to 20 V and delivers a regulated output current of 1.5 A. The device supports forward phase (Triac) and reverse phase dimming capabilities. It functions within a temperature range of -40°C to +125°C and utilizes a TSSOP-16 surface-mount package.

Feature Summary

• Integrates active power factor correction to enhance electrical efficiency
• Supports both forward phase and reverse phase dimming protocols
• Provides constant current regulation for high-power LED loads

Applications

• High-efficiency AC/DC LED lighting drivers
• Dimmable solid-state lighting fixtures
• Primary-side controlled flyback converter designs

Procurement Notes

Verify the exact suffix against the manufacturer's latest datasheet to confirm pinout and thermal specifications. Ensure the ordering code matches the required package variant. Cross-reference the RoHS status with current regulatory requirements before finalizing procurement orders.

Selection Notes

Select this component for applications requiring integrated PFC and dimming control in a compact form factor. Evaluate the 1.5 A output capability against specific LED string requirements. Confirm that the operating voltage range aligns with the intended power supply design constraints.

Part Context

This part belongs to the LM3450 series of LED drivers. It shares functional similarities with other variants like the LM3450AMTX/NOPB but differs in packaging and specific configuration options. The series targets general illumination markets requiring compliant power factor correction.

Replacement Considerations

Direct substitutes include LM3450AMTX/NOPB. Verify pin compatibility and thermal performance before substitution.