onsemi

NCP1055ST100T3

NCP1055ST100T3 Description

The NCP1055ST100T3 is an obsolete offline switch IC designed for flyback topology applications, manufactured by onsemi. This device features an internal switch and operates at a switching frequency of 100kHz. It is designed for isolated output applications and offers a wide supply voltage range of 7.5V to 10V. The NCP1055ST100T3 is housed in a surface-mount SOT223 package and is available in tape & reel format. It has a breakdown voltage of 700V and can deliver up to 40W of power. The device includes comprehensive fault protection mechanisms such as current limiting, open loop, over load, and over temperature protection. It also features a duty cycle of 77% and a start-up voltage of 8.5V. The NCP1055ST100T3 is REACH unaffected and has a moisture sensitivity level (MSL) of 1, making it suitable for a wide range of manufacturing environments.

NCP1055ST100T3 Features

• Internal Switch: The NCP1055ST100T3 incorporates an internal switch, simplifying the design and reducing the number of external components required.
• Switching Frequency: Operating at 100kHz, this frequency ensures efficient power conversion while maintaining a compact design.
• Wide Supply Voltage Range: The device supports a supply voltage range of 7.5V to 10V, providing flexibility in various power supply configurations.
• Isolated Output: The isolated output topology ensures safety and reliability in applications where galvanic isolation is required.
• Comprehensive Fault Protection: The NCP1055ST100T3 offers robust fault protection mechanisms, including current limiting, open loop, over load, and over temperature protection, enhancing the reliability and longevity of the device.
• High Power Capability: With a power rating of 40W, the NCP1055ST100T3 is capable of delivering substantial power in a small form factor.
• High Breakdown Voltage: The 700V breakdown voltage ensures robustness against high voltage transients, making it suitable for demanding applications.
• Surface-Mount Packaging: The SOT223 package is ideal for surface-mount assembly, facilitating automated manufacturing processes and reducing board space.
• REACH Compliance: The NCP1055ST100T3 is REACH unaffected, ensuring compliance with environmental regulations and suitability for global markets.

NCP1055ST100T3 Applications

The NCP1055ST100T3 is well-suited for a variety of applications that require efficient power conversion and isolated outputs. Some specific use cases include:

• Power Supplies: Ideal for offline power supplies in consumer electronics, where isolated outputs are necessary for safety and compliance.
• Adapters and Chargers: Suitable for AC-DC adapters and chargers that require high efficiency and compact design.
• Industrial Equipment: Can be used in industrial applications where isolated outputs are required for safety and reliability.
• Telecommunications: Applicable in telecom equipment where high power and robust fault protection are essential.

Conclusion of NCP1055ST100T3

The NCP1055ST100T3 is a versatile offline switch IC designed for flyback topology applications. Its wide supply voltage range, high power capability, and comprehensive fault protection make it an ideal choice for a variety of power conversion applications. The device's internal switch and surface-mount packaging further enhance its ease of use and integration. Despite being marked as obsolete, the NCP1055ST100T3 remains a reliable option for applications requiring efficient power conversion and isolated outputs.