STMicroelectronics

L6521TR

L6521TR Description

The L6521TR is a surface-mount CFL/TL controller designed by STMicroelectronics, a leading manufacturer in the power management sector. This controller is specifically engineered for compact fluorescent lamp (CFL) and tubular lamp (TL) applications. It operates within a supply voltage range of 10.5V to 18.5V and draws a supply current of 8 mA. The L6521TR features a frequency range of 46kHz to 47.2kHz, making it suitable for high-frequency lighting applications. Despite being marked as obsolete, the L6521TR remains a reliable choice for its intended applications, offering stable performance and compliance with industry standards such as REACH and ROHS3. The product is packaged in tape and reel (TR) format, ensuring ease of handling and integration into manufacturing processes. With a moisture sensitivity level (MSL) of 3 (168 hours), the L6521TR is designed to withstand typical manufacturing environments.

L6521TR Features

The L6521TR boasts several key features that set it apart from similar models:

• High-Frequency Operation: With a frequency range of 46kHz to 47.2kHz, the L6521TR ensures efficient and stable performance in high-frequency lighting applications.
• Low Supply Current: Drawing only 8 mA of supply current, the L6521TR is highly energy-efficient, making it suitable for applications where power consumption is a critical factor.
• Wide Supply Voltage Range: The controller operates within a supply voltage range of 10.5V to 18.5V, providing flexibility in power supply options.
• Surface-Mount Technology: The surface-mount design allows for easy integration into compact and space-constrained systems.
• Compliance with Industry Standards: The L6521TR is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards.
• Packaging and Handling: The tape and reel (TR) packaging format facilitates efficient handling and integration into automated manufacturing processes.
• Moisture Sensitivity Level: With an MSL of 3 (168 hours), the L6521TR is designed to withstand typical manufacturing environments, reducing the risk of moisture-related issues.

L6521TR Applications

The L6521TR is ideal for a variety of applications, particularly in the lighting industry:

• Compact Fluorescent Lamps (CFLs): The L6521TR is specifically designed to control and manage the operation of CFLs, ensuring optimal performance and longevity.
• Tubular Lamps (TLs): The controller is also suitable for managing TLs, providing stable and efficient operation in various lighting systems.
• Energy-Efficient Lighting Systems: The low supply current and high-frequency operation make the L6521TR an excellent choice for energy-efficient lighting solutions.
• Industrial and Commercial Lighting: The wide supply voltage range and surface-mount design make the L6521TR suitable for industrial and commercial lighting applications where reliability and efficiency are paramount.

Conclusion of L6521TR

The L6521TR is a robust and reliable CFL/TL controller that offers several unique features and advantages over similar models. Its high-frequency operation, low supply current, and wide supply voltage range make it an ideal choice for various lighting applications. Despite being marked as obsolete, the L6521TR remains a viable option for its intended applications, providing stable performance and compliance with industry standards. The surface-mount design and tape and reel packaging format further enhance its suitability for modern manufacturing processes. For those seeking a reliable and efficient controller for CFL and TL applications, the L6521TR is a strong contender.