The LT3475IFE is a robust and versatile dual-channel, step-down DC/DC converter specifically designed to power LED applications. Manufactured by Linear Technology, a leader in the design and manufacturing of high-performance analog integrated circuits, this converter is an ideal solution for driving high current LEDs with constant current for uniform brightness.

Key Features

• Wide Input Voltage Range: The LT3475IFE operates from a wide input voltage range of 3V to 30V, making it suitable for a variety of input sources, including automotive and industrial supplies.
• Dual Independent LED Drivers: With two internal 1.5A switches, it can drive up to 10 white LEDs per channel in series, ensuring consistent lighting across both channels.
• True Color PWM™ Dimming: The device offers a wide dimming ratio of up to 3000:1 using True Color PWM dimming, which provides accurate color control and brightness scaling.
• Adjustable Frequency: The switching frequency is adjustable from 330kHz to 2.5MHz, allowing designers to optimize the converter for efficiency or component size.
• Robust Protection Features: The LT3475IFE is equipped with open LED and short-circuit protection, ensuring reliable operation under adverse conditions.

Applications

The converter's dual-channel design and high current capability make it an excellent choice for driving high power LEDs in a wide range of applications, including:

• Automotive and avionics lighting
• Architectural detail lighting
• Display backlighting
• General-purpose flashlight and torch applications

Package and Reliability

The LT3475IFE is available in a compact 16-lead TSSOP package with an exposed pad for improved thermal performance. Linear Technology ensures high reliability and performance of the LT3475IFE, making it a trusted choice for demanding LED driving applications.