NCP300LSN33T1

Supervisors Overview

The NCP300LSN33T1 is a second-generation ultra-low current voltage detector manufactured by onsemi. It functions as a processor supervisor with a fixed threshold of 3.3V, designed for portable microprocessor-based systems to extend battery life. The device operates within an input voltage range of 0.9V to 4.9V and features a single channel with one functional unit. It utilizes a 5-pin TSOP package (TSOP5/6,.11,37) with dimensions of 3mm length. The component is lead-free, RoHS compliant, and has a moisture sensitivity level of 1.

Supervisors Feature Summary

• Ultra-low current consumption architecture optimized for portable applications
• Fixed 3.3V detection threshold for precise system monitoring
• Active low/open drain output configuration

Supervisors Applications

• Reset controller in portable microprocessor-based systems
• MCU system load sensing
• Battery-powered device supervision

Supervisors Procurement Notes

Verify the specific suffix 'T1' against official datasheets, as it may indicate tape-and-reel packaging or specific manufacturing lot codes distinct from the standard 'T1G' variant. Confirm pinout compatibility with the 5-pin TSOP footprint during integration. Ensure the operating voltage range aligns with the target circuit's supply rails to prevent false triggering.

Supervisors Selection Notes

Select this component when extended battery life is critical in portable designs requiring a fixed 3.3V reset threshold. Compare against the NCP301 series if adjustable thresholds or different output configurations are needed. Verify that the 0.9V to 4.9V input range covers the minimum operating voltage of the monitored system.

Supervisors Part Context

This part belongs to the NCP300 series of second-generation ultra-low current voltage detectors. It shares design principles with related models like the NCP300LSN34T1 and NCP300HSN30T1, which offer different fixed thresholds such as 3.4V and 3.0V respectively. The series is specifically engineered for applications where minimizing quiescent current is paramount.

Supervisors Replacement Considerations

The NCP300LSN33T1G is a direct equivalent with RoHS compliance confirmation. Other NCP300 series variants with different voltage thresholds may serve as functional substitutes if the reset point can be adjusted or tolerated.