Product Overview: LT3466EDD-1

The LT3466EDD-1 is a versatile and high-performance integrated circuit designed by Linear Technology, now part of Analog Devices, for driving LED arrays. This compact, dual full-bridge DC/DC converter is specifically engineered to provide a high efficiency solution for driving LEDs in a variety of applications, including automotive and industrial lighting, backlighting for LCD displays, and general-purpose LED illumination.

Key Features

• Wide Input Voltage Range: The device operates from a 2.5V to 16V input voltage range, making it suitable for a variety of power sources, from single-cell Li-Ion batteries to multi-cell battery configurations and fixed voltage power supplies.
• Dual Full-Bridge Topology: The LT3466EDD-1 uses a dual full-bridge topology which enables it to drive two LED strings independently, providing design flexibility and efficient power usage.
• High Efficiency: With an integrated 1.6A switch, the device ensures high efficiency and robust performance for driving LEDs with high brightness and consistent color.
• Adjustable Frequency: The switching frequency can be synchronized to an external clock between 200kHz and 2MHz, allowing for flexibility in design and optimization of external component sizes.
• True Color PWM Dimming: The LT3466EDD-1 offers true color PWM dimming, which delivers constant LED color with varying brightness levels, enhancing the visual experience and providing energy savings.

Protection Features

The LT3466EDD-1 integrates multiple protection features to ensure long-term reliability and safety of the LED driver system. These include open LED protection, which prevents damage to the driver when an open circuit is detected in the LED string, and thermal shutdown to protect the device in high-temperature conditions. Additionally, the device has a built-in soft-start feature to minimize inrush current during startup, further safeguarding the system from potential stress.

Package and Availability

The device is available in a compact 10-lead DFN package with a thermal pad for enhanced thermal performance. The LT3466EDD-1 is designed for straightforward implementation into existing designs, offering a reliable and efficient solution for high-performance LED driving applications.