onsemi

NCP1054ST100T3

NCP1054ST100T3 Description

The NCP1054ST100T3 is an obsolete offline switch flyback controller IC designed for power management applications. Manufactured by onsemi, this device is housed in a Surface Mount SOT223 package and is available in Tape & Reel (TR) format. It features an internal switch with a switching frequency of 100kHz, providing efficient power conversion. The NCP1054ST100T3 operates within a supply voltage range of 7.5V to 10V and has a startup voltage of 8.5V. It offers a breakdown voltage of 700V and can handle up to 40W of power. The device is REACH unaffected and classified under ECCN EAR99 with an HTSUS code of 8542.39.0001. It has a moisture sensitivity level (MSL) of 1, indicating unlimited exposure to moisture, making it suitable for various environmental conditions.

NCP1054ST100T3 Features

• Topology: Flyback topology ensures efficient power conversion and isolation.
• Internal Switch: The presence of an internal switch simplifies the circuit design and reduces component count.
• Switching Frequency: A 100kHz switching frequency balances efficiency and component size.
• Supply Voltage Range: Operates within a 7.5V to 10V supply voltage range, providing flexibility in power source selection.
• High Breakdown Voltage: A 700V breakdown voltage ensures robustness against voltage spikes.
• Power Capability: Capable of handling up to 40W of power, making it suitable for a wide range of applications.
• Fault Protection: Comprehensive fault protection mechanisms, including current limiting, open loop, over load, and over temperature protection, enhance reliability and safety.
• Duty Cycle: A 77% duty cycle allows efficient power transfer and minimizes energy loss.
• Moisture Sensitivity: MSL 1 (Unlimited) ensures the device can be used in various environmental conditions without moisture-related issues.
• Compliance: REACH unaffected status and ECCN EAR99 classification ensure compliance with regulatory standards.

NCP1054ST100T3 Applications

The NCP1054ST100T3 is ideal for applications requiring efficient power conversion and isolation. Its flyback topology and internal switch make it suitable for:

• Power Supplies: Ideal for offline power supplies in consumer electronics, where isolation and efficiency are critical.
• Adapters and Chargers: Suitable for AC-DC adapters and chargers, providing reliable power conversion.
• Industrial Equipment: Can be used in industrial control systems where robustness and high breakdown voltage are required.
• Telecommunications: Applicable in telecom equipment for power management and isolation.
• Consumer Electronics: Suitable for a variety of consumer devices that require efficient power management and isolation.

Conclusion of NCP1054ST100T3

The NCP1054ST100T3 offers a robust solution for power management applications with its flyback topology, internal switch, and comprehensive fault protection. Its high breakdown voltage and efficient power handling capabilities make it suitable for a wide range of applications, from power supplies to industrial equipment. Despite being marked as obsolete, the NCP1054ST100T3 remains a reliable choice for designers seeking a proven power management IC with excellent performance and compliance features.