onsemi

MC33364D

MC33364D Description

The MC33364D from onsemi is a high-performance offline switch designed for flyback topology applications, offering robust power conversion in a compact 16-SOIC surface-mount package. As part of the GreenLine™ series, it emphasizes energy efficiency and reliability, though it is now classified as obsolete. With a 700V breakdown voltage and a 126kHz switching frequency, it is engineered for isolated AC/DC power supplies, ensuring stable operation within a 7.6V to 16V supply range. Its 15V startup voltage and frequency control mechanism enable precise power management, while integrated current limiting and over-temperature protection enhance system durability.

MC33364D Features

• High Voltage Tolerance: 700V breakdown rating for robust offline operation.
• Frequency Control: Fixed 126kHz switching for predictable performance.
• Protection Mechanisms: Built-in current limiting and thermal shutdown for fault resilience.
• Low Startup Voltage: 15V ensures quick initialization.
• Isolated Output: Suitable for safety-critical designs.
• Surface-Mount Design: 16-SOIC package for space-constrained PCB layouts.
• Compliance: REACH unaffected and EAR99 classification for global usability.

MC33364D Applications

The MC33364D excels in low-to-medium power offline converters, including:

• Auxiliary power supplies for industrial equipment.
• Consumer electronics (e.g., adapters, LED drivers).
• Isolated DC/DC modules in telecom and networking devices.
• Household appliances requiring reliable standby power.
  Its flyback topology and protection features make it ideal for cost-sensitive, compact designs where efficiency and safety are priorities.

Conclusion of MC33364D

While obsolete, the MC33364D remains a technically competent solution for offline flyback converters, combining high voltage handling, integrated protections, and frequency stability. Its legacy in GreenLine™ efficiency and surface-mount compatibility ensures relevance in refurbishment or legacy system maintenance. Engineers should evaluate modern alternatives for new designs but may leverage this IC for proven performance in existing applications.