The LT3517IFE is a highly integrated, multifunctional LED driver from Linear Technology that has been engineered to cater to a broad range of lighting applications. This driver is particularly suitable for automotive, display backlighting, and general-purpose LED illumination solutions. The LT3517IFE stands out with its ability to provide a constant-current and constant-voltage source, ensuring optimal performance for various LED configurations.

Key Features

• Wide Input Voltage Range: The LT3517IFE operates efficiently across a wide input voltage range from 3V to 30V, making it versatile for use in multiple applications, including those with fluctuating power supplies.
• Adjustable Switching Frequency: With a switching frequency that can be programmed between 250kHz to 2.5MHz, designers have the flexibility to optimize the driver for efficiency or component size.
• High Output Voltage Capability: This driver can provide an output voltage up to 45V, which is suitable for driving multiple LED strings in series, ensuring uniform brightness and simplifying design.
• Integrated Fault Protection: The LT3517IFE includes thermal shutdown, open LED and short-circuit protection, safeguarding the LEDs and the driver from potential damage due to abnormal operating conditions.
• PWM Dimming: It offers a wide dimming ratio with high dimming frequency capability, allowing for precise control over LED brightness while maintaining color fidelity.

Applications

• Automotive and Avionic Lighting
• Display Backlighting
• General LED Illumination

Package and Reliability

The LT3517IFE is available in a thermally enhanced 16-lead TSSOP package, which is designed to improve heat dissipation and ensure long-term reliability. With its robust design and comprehensive protection features, the LT3517IFE is a reliable choice for demanding lighting applications.

Conclusion

Linear Technology's LT3517IFE brings together a wide input voltage range, high output capability, and extensive protection features, making it an excellent choice for designers looking to create efficient, reliable, and high-performing LED lighting solutions.