NCV303LSN14T1G

Supervisors Overview

The NCV303LSN14T1G is a supervisory circuit voltage detector manufactured by onsemi, designed for monitoring single-input power rails. It operates within a supply voltage range of 800 mV to 10 V and features a fixed threshold voltage of 1.4 V with an overvoltage threshold of 1.428 V. The device provides an active low, open-drain output and includes a programmable reset delay time. It exhibits a typical accuracy of 2% and consumes only 500 nA of operating supply current. The component supports battery backup switching and functions reliably across an extended temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Provides active low open-drain reset signaling for monitored power supplies
• Features programmable reset delay timing for flexible system integration
• Supports battery backup switching to maintain system state during power transitions

Supervisors Applications

• Portable electronic devices requiring low quiescent current monitoring
• Battery-powered systems utilizing backup switching capabilities
• Automotive electronics certified under AEC-Q100 standards

Supervisors Procurement Notes

Verify the specific suffix T1G confirms the reel packaging configuration. Confirm that the NCV prefix denotes automotive grade qualification compared to commercial variants. Ensure the TSOP-5 package dimensions match your PCB footprint requirements. Check for RoHS compliance documentation if required by your manufacturing standards.

Supervisors Selection Notes

Select this component when a fixed 1.4 V detection threshold is required for low-voltage rail supervision. The low 500 nA quiescent current makes it suitable for energy-constrained applications. The programmable delay allows customization of reset timing relative to power-up sequences. Ensure the input voltage remains within the 800 mV to 10 V operational window.

Supervisors Part Context

This part belongs to the NCP303/NCV303 series of simple supervisor circuits. The NCV prefix indicates automotive-grade qualification, distinguishing it from the commercial NCP variant. These devices are designed for compact surface-mount integration in power management subsystems where space and efficiency are critical constraints.

Supervisors Replacement Considerations

The NCP303LSN14T1G serves as the commercial equivalent. Other NCV303LSN variants with different threshold voltages may be functionally compatible if the detection level can be adjusted or does not impact system logic.