LM3433SQX/NOPB

Overview

The LM3433SQX/NOPB is a high-brightness LED driver IC from Texas Instruments, designed for universal anode applications. It operates with a wide input voltage range of 12 V to 95 V and supports output currents up to 6 A. The device features adjustable switching frequencies between 900 kHz and 1.15 MHz, enabling efficient power management. It includes thermal foldback protection and supports both analog and PWM dimming methods. Packaged in a WQFN-48 case, it functions as a boost or buck converter topology controller.

Feature Summary

• Supports boost and buck converter topologies for flexible LED drive configurations
• Integrates thermal foldback protection to safeguard against overheating conditions
• Enables precise light control through combined analog and PWM dimming capabilities

Applications

• High brightness LED lighting systems
• Automotive exterior lighting applications
• Industrial LED illumination setups

Procurement Notes

Verify the specific suffix 'X' indicates reel packaging when sourcing components. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the supplier provides genuine Texas Instruments products to guarantee performance reliability and adherence to specified electrical characteristics for critical LED driver implementations.

Selection Notes

Select this component for designs requiring wide input voltage ranges and high output current capabilities. Consider the WQFN-48 package for space-constrained PCB layouts. Evaluate thermal management requirements due to the high current handling capacity. Ensure compatibility with existing PWM dimming signals if precise light control is necessary for the target application environment.

Part Context

This part belongs to the LM3433 series of LED drivers, which are optimized for high-power LED applications. It complements other Texas Instruments PMIC solutions by providing dedicated constant current regulation. The device integrates essential protection features within a compact form factor, serving as a core component in modern high-efficiency lighting architectures.

Replacement Considerations

Check for direct substitutes within the LM3433 family that may offer different pin configurations or updated packaging options. Verify functional equivalence regarding input voltage ranges and maximum output currents before swapping components. Ensure any replacement maintains the same thermal performance characteristics and dimming interface compatibility.