LT3474EFE#PBF - A High-Power LED Driver from Linear Technology

The LT3474EFE#PBF is a robust and efficient PWM LED driver integrated circuit manufactured by Linear Technology, now part of Analog Devices. This component is designed specifically to power high-brightness LEDs and is well-suited for a variety of lighting applications including automotive, industrial, and general illumination. With its wide input voltage range and internal 36V, 1A switch, the LT3474EFE#PBF provides a compact and versatile solution for driving single or multiple LEDs in series.

This LED driver operates from an input voltage range of 4V to 36V, making it ideal for applications powered from a wide range of sources, from single-cell Li-Ion batteries to automotive inputs. The LT3474EFE#PBF utilizes True Color PWM™ dimming, which delivers constant LED color with deep dimming capability. This feature allows for precise brightness control over a wide dimming range, ensuring consistent color and brightness levels.

The LT3474EFE#PBF is equipped with a unique switching regulator design, using an internal 1A, 36V switch, which can drive up to ten 350mA LEDs in series from a 12V input, providing flexibility in the design of lighting systems. This high-side current sense allows the cathode of the LED to be connected directly to the ground, compatible with common anode LED arrays and simplifying the system design.

Protection features of the LT3474EFE#PBF include open LED protection, which safeguards the device when an open circuit is detected at the LED output. Additionally, its thermal shutdown ensures reliable operation by preventing overheating. The device is offered in a thermally enhanced TSSOP-16 package, providing excellent power dissipation and thermal performance.

Overall, the LT3474EFE#PBF from Linear Technology is a highly capable LED driver that combines efficiency, flexibility, and reliability. Its advanced features and robust design make it an excellent choice for engineers and designers looking to create high-performance LED lighting solutions.