STMicroelectronics

L6590D

L6590D Description

The L6590D is an offline switch flyback controller designed for high-efficiency power conversion applications. Manufactured by STMicroelectronics, this IC is part of the Power Management (PMIC) category and is housed in a 16SO package. Despite being marked as obsolete, the L6590D remains a robust solution for various power management needs.

L6590D Features

The L6590D boasts several key technical specifications that contribute to its performance and reliability:

• Internal Switch: The inclusion of an internal switch simplifies the design and reduces the component count, making it easier to implement in various applications.
• Switching Frequency: Operating at a switching frequency of 65kHz, the L6590D ensures efficient power conversion with minimal electromagnetic interference (EMI).
• Output Isolation: The isolated output design enhances safety and reliability, making it suitable for applications requiring galvanic isolation.
• Supply Voltage Range: With a wide supply voltage range of 6.5V to 18V, the L6590D can accommodate a variety of input power sources, providing flexibility in system design.
• Breakdown Voltage: A high breakdown voltage of 700V ensures robustness against voltage spikes and transient conditions, enhancing the overall system reliability.
• Power Output: Capable of delivering up to 15W, the L6590D is well-suited for low to medium power applications.
• Fault Protection: Comprehensive fault protection mechanisms, including current limiting, over-temperature, and over-voltage protection, safeguard the IC and connected components from damage.
• Duty Cycle: A maximum duty cycle of 70% allows for efficient power delivery and control, optimizing the performance of the power conversion system.
• Compliance: The L6590D is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and regulatory standards.
• Moisture Sensitivity Level: With an MSL of 1 (unlimited), the L6590D is suitable for surface mount applications without the need for special handling or storage conditions.

L6590D Applications

The L6590D is ideal for a range of applications due to its versatile design and robust performance. Some specific use cases include:

• Consumer Electronics: Suitable for powering small appliances, chargers, and other consumer devices that require efficient power conversion and isolation.
• Industrial Applications: Ideal for industrial control systems, instrumentation, and other applications where reliability and safety are paramount.
• Telecommunications: Can be used in power supplies for telecommunication equipment, providing stable and isolated power outputs.
• Medical Devices: The isolated output and comprehensive fault protection make the L6590D suitable for medical devices where patient safety and equipment reliability are critical.

Conclusion of L6590D

In summary, the L6590D is a versatile and reliable offline switch flyback controller that offers a comprehensive set of features and benefits. Despite its obsolete status, the L6590D remains a valuable component for power management applications, providing efficient power conversion, robust protection, and compliance with industry standards. Its wide supply voltage range, high breakdown voltage, and comprehensive fault protection make it an ideal choice for a variety of applications, from consumer electronics to industrial and medical devices.