LM3046M/NOPB – TEXAS INSTRUMENTS

The Texas Instruments LM3046M/NOPB is a high-efficiency, constant-current LED driver optimized for applications requiring precise current regulation with minimal external components. This specific part number, denoted by the “/NOPB” suffix, signifies lead-free packaging in a space-saving 8-pin SOIC (small outline integrated circuit) format. It operates from a wide input voltage range of 4.5V to 40V, making it suitable for various power supply architectures. The LM3046M boasts a high switching frequency (up to 1MHz) minimizing the size of external inductors and capacitors. Its internal current sense amplifier provides accurate regulation, typically within ±3% accuracy, across a wide load range. The device incorporates features like thermal shutdown and short-circuit protection, enhancing system robustness. Common applications include driving high-power LEDs in automotive lighting, industrial signage, and general illumination systems where precise current control and high efficiency are paramount. The LM3046M/NOPB’s inherent advantages lie in its compact size, streamlined design requiring minimal external components, and its ability to efficiently manage power dissipation, ultimately reducing system cost and complexity. Its wide input voltage range further simplifies power supply design.