NCP301LSN38T1

Supervisors Overview

The NCP301LSN38T1G is a supervisory circuit from onsemi, specifically an analog under-voltage detector with a fixed threshold of 3.8V. It functions as a processor supervisor in portable microprocessor-based systems to ensure extended battery life. The device features an open-drain output and operates within a single channel configuration. It is housed in a compact 5-pin TSOP package, designed for low current consumption applications where power efficiency is critical.

Supervisors Feature Summary

• Ultra-low current consumption design optimized for portable systems
• Fixed voltage detection threshold for reliable reset control
• Open-drain output interface for flexible logic compatibility

Supervisors Applications

• Reset controllers in portable microprocessor systems
• Battery-powered embedded devices requiring extended life
• Under-voltage detection in low-power circuits

Supervisors Procurement Notes

Verify the complete part number includes the 'G' suffix for lead-free compliance when ordering. Confirm the specific threshold voltage matches the system requirement, as the NCP301 series offers multiple fixed options. Ensure the 5-pin TSOP package fits the PCB layout constraints. Cross-reference the datasheet for operating temperature ranges and electrical characteristics relevant to the target application environment.

Supervisors Selection Notes

Select this component when ultra-low quiescent current is paramount for battery longevity in portable electronics. The fixed 3.8V threshold suits systems where this specific under-voltage level triggers a reset. Consider the open-drain output if external pull-up requirements align with the system logic levels. Evaluate the 5-pin TSOP package size against available board space compared to other package options in the series.

Supervisors Part Context

This part belongs to the NCP301 series of second-generation ultra-low current voltage detectors by onsemi. The series is engineered specifically for use as reset controllers in portable microprocessor-based systems. Key differentiators include minimal current draw to preserve battery life and a simple interface suitable for low-power designs. The NCP301LSN38T1G represents a specific threshold variant within this family.

Supervisors Replacement Considerations

Compatible substitutes include other NCP301 variants with different fixed thresholds (e.g., NCP301LSN39T1G, NCP301LSN34T1G) if the voltage level can be adjusted. Verify that any replacement maintains the same 5-pin TSOP package and open-drain output configuration to ensure pin-to-pin compatibility without schematic changes.