NCP304LSQ14T1

Supervisors Overview

The NCP304LSQ14T1 is a voltage detector from onsemi designed for power supply supervision. It features a fixed threshold voltage of 1.4V with an accuracy of 2%. The device operates within a supply voltage range up to 10V and consumes a typical quiescent current of 1 uA. It provides an active low, CMOS output signal. The component supports battery backup switching functionality and lacks manual reset or watchdog timer capabilities. It is housed in an SC-82AB-4 surface-mount package and functions across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides precise power supply monitoring with a fixed 1.4V detection threshold
• Features ultra-low quiescent current consumption for energy efficiency
• Includes battery backup switch capability to maintain system state during power transitions

Supervisors Applications

• Portable electronic devices requiring low-power supervision
• Battery-operated systems needing backup switching support
• Microcontroller reset circuits in embedded applications

Supervisors Procurement Notes

Verify the specific suffix '14' confirms the 1.4V threshold requirement for your design. Confirm RoHS compliance status as documentation indicates potential non-compliance for this series variant. Check availability through authorized distributors, noting that some sources list this part as discontinued or limited stock. Ensure the SC-82AB-4 package footprint matches your PCB layout constraints before ordering.

Supervisors Selection Notes

Select this component when a fixed 1.4V threshold is required for low-voltage logic supervision. The low 1 uA quiescent current makes it suitable for battery-powered applications where standby power conservation is critical. Consider the absence of a manual reset feature if user-initiated recovery is necessary. Verify that the active low output polarity aligns with the input requirements of the downstream microcontroller or logic gate.

Supervisors Part Context

This part belongs to the NCP304LSQ series of voltage detectors from onsemi. The series offers various fixed threshold options ranging from 0.9V to 4.1V to accommodate different logic families. These supervisors are designed for compact surface-mount applications, providing reliable power management in space-constrained consumer and industrial electronics without requiring external components for basic operation.

Supervisors Replacement Considerations

Substitute parts must match the 1.4V threshold and SC-82AB-4 package. Compatible alternatives include other NCP304 variants with identical pinouts but different thresholds, or equivalent supervisors from manufacturers like STMicroelectronics or Texas Instruments offering similar low-current specifications and active low outputs.