The LT3798EMSE#PBF is a cutting-edge LED controller integrated circuit (IC) from Linear Technology, designed for driving LEDs with a constant current for high brightness and reliability. This product stands out with its active power factor correction (PFC), making it an ideal choice for lighting applications that require efficient power usage and compliance with regulatory standards.

Key Features

• Active Power Factor Correction: The LT3798EMSE#PBF is designed to provide a high power factor, which is essential for energy efficiency and meeting regulatory requirements.
• Wide Input Voltage Range: This LED controller can operate with input voltages ranging from a few volts to several hundred volts, making it versatile for various power supplies and conditions.
• Isolated Controller: It offers electrical isolation between the input and the output, which enhances safety and complies with certain application standards.
• Constant-Current and Constant-Voltage Modes: The device can be configured to operate in either mode, allowing for flexibility in driving LEDs or charging batteries.
• No Opto-Coupler Required: The design eliminates the need for an opto-coupler, reducing complexity and enhancing reliability.
• Thermal Protection: Over-temperature protection ensures the device operates within safe temperature ranges, thereby prolonging its lifespan.

Applications

The LT3798EMSE#PBF is suitable for a wide range of applications, including:

• Industrial and commercial LED lighting
• Street lighting
• Automotive lighting systems
• General purpose constant current sources

Product Specifications

The part number LT3798EMSE#PBF comes in an MSOP-16 package and is designed for surface mount technology (SMT). It operates over a junction temperature range of -40°C to +125°C, ensuring performance in extreme conditions. The device also features a programmable frequency between 100kHz to 1MHz, which allows designers to optimize the size and efficiency of the external components.

Conclusion

With its robust feature set, the LT3798EMSE#PBF from Linear Technology is a highly adaptable and efficient solution for driving high-power LEDs with precision and safety. Its active PFC and flexibility in input voltage make it a top choice for energy-conscious applications that require high performance and compliance with global lighting standards.