LM3414HVSDX/NOPB

Overview

The LM3414HVSDX/NOPB is a high-voltage, constant current buck LED driver IC manufactured by Texas Instruments. It operates with an input voltage range of 4.5 V to 65 V and delivers a regulated output current of 1 A. The device utilizes a WSON-8 surface-mount package and supports switching frequencies adjustable between 250 kHz and 1 MHz. It features integrated thermal shutdown, enable/shutdown control, and compatibility with both analog and PWM dimming methods. The component is designed for operation within a temperature range of -40°C to +125°C.

Feature Summary

• Supports common anode LED configurations without requiring external current sensing resistors
• Integrates power switch and protection circuitry including thermal shutdown
• Enables precise brightness control through analog and pulse-width modulation dimming interfaces

Applications

• General solid-state lighting fixtures
• LED downlights and spotlights
• Commercial linear lighting systems

Procurement Notes

Verify the specific suffix 'X' indicates reel packaging when ordering. Confirm RoHS compliance status via official datasheets as required by project specifications. Ensure the WSON-8 footprint matches the target PCB layout constraints. Validate that the 65 V maximum input rating aligns with the system's supply voltage headroom requirements.

Selection Notes

Select this component for designs requiring high input voltage tolerance up to 65 V in a compact form factor. The absence of external current sense resistors simplifies bill of materials and reduces board space. Consider the thermal performance characteristics inherent to the WSON-8 package for heat dissipation planning. Verify compatibility with existing dimming control signals before finalizing the design.

Part Context

This part belongs to the LM3414HV series of high-voltage LED drivers from Texas Instruments. It shares functional similarities with the standard LM3414 but offers extended input voltage capabilities. The device is often evaluated using the LM3414HVSDEVAL/NOPB development board for initial circuit validation and performance testing.

Replacement Considerations

The LM3414SDX/NOPB serves as a related variant within the same family, typically offering similar functionality with potentially different voltage or packaging specifications. Cross-reference detailed electrical parameters and pinout configurations before substitution.