onsemi

NCP301LSN45T1

NCP301LSN45T1 Description

The NCP301LSN45T1 is a single-channel voltage supervisor IC from onsemi, designed for precision monitoring of power supply voltages in electronic systems. Housed in a compact 5-pin TSOP package and available in Tape & Reel (TR) packaging, this surface-mount device is optimized for space-constrained applications. It features a fixed 4.5V threshold voltage with an active-low reset output, ensuring reliable system initialization and fault detection. The open-drain/open-collector output provides flexibility for interfacing with various logic levels. Although marked as Obsolete, it remains a robust choice for legacy designs requiring stable voltage supervision.

NCP301LSN45T1 Features

• Precision Monitoring: Fixed 4.5V threshold ensures accurate detection of undervoltage conditions.
• Flexible Output: Open-drain/open-collector output supports compatibility with multiple logic families.
• Compact Form Factor: 5-pin TSOP package ideal for high-density PCB layouts.
• Reliable Performance: Active-low reset signal guarantees proper system startup and shutdown sequencing.
• Environmental Compliance: REACH Unaffected and MSL 1 (Unlimited) rating ensures suitability for extended storage and handling.

NCP301LSN45T1 Applications

• Embedded Systems: Ensures stable operation of microcontrollers and FPGAs during power fluctuations.
• Industrial Controls: Monitors supply rails in PLCs, motor drives, and automation equipment.
• Consumer Electronics: Protects battery-powered devices from undervoltage damage.
• Legacy Designs: Ideal for maintaining or repairing older systems where modern alternatives may not be pin-compatible.

Conclusion of NCP301LSN45T1

The NCP301LSN45T1 offers a reliable, compact solution for voltage supervision in critical electronic systems. Its precision threshold, flexible output, and robust packaging make it suitable for industrial, embedded, and consumer applications. While obsolete, its design advantages ensure continued relevance in legacy and maintenance-focused projects. For engineers seeking a proven voltage monitor with straightforward integration, the NCP301LSN45T1 remains a practical choice.