NCP304LSQ15T1

Overview

The NCP304LSQ15T1 is a second-generation ultra-low current voltage detector manufactured by onsemi. It functions as a processor supervisor with a fixed threshold voltage of 1.5V and an active low CMOS output. The device operates within a supply voltage range of 800 mV to 10 V, featuring a typical operating supply current of 1 uA. It provides high accuracy with a 2% tolerance and includes battery backup switching capabilities. The component is housed in a surface-mount SC-82AB package and supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low quiescent current consumption designed for extended battery life in portable systems
• Fixed 1.5V detection threshold with active low reset output
• Integrated battery backup switch functionality for seamless power transitions

Applications

• Reset controllers for microprocessor-based systems
• Load sensing applications in portable devices
• LED bar graph voltage monitoring circuits

Procurement Notes

Verify the specific suffix 'T1' against the official datasheet to confirm tape-and-reel packaging and exact electrical characteristics. Confirm RoHS compliance status, as historical variants may differ. Ensure the SC-82AB package availability aligns with current manufacturing cycles. Cross-reference the part number with the manufacturer's latest obsolescence notices to avoid sourcing discontinued inventory.

Selection Notes

Select this component when system design requires minimal standby current to maximize battery longevity in portable electronics. The fixed 1.5V threshold suits low-voltage logic families. Verify that the active low output polarity matches the target microcontroller's reset input requirements. Consider the SC-82AB footprint constraints during PCB layout planning.

Part Context

This device belongs to the NCP304 series of voltage detectors, which are engineered specifically for portable microprocessor applications. The series emphasizes low power consumption to preserve battery life. The NCP304LSQ15T1 variant offers a precise 1.5V threshold, distinguishing it from other thresholds in the family while maintaining the core ultra-low current architecture.

FAQ

Does the NCP304LSQ15T1 include a manual reset function?

No, the device does not feature a manual reset input; it relies solely on voltage threshold detection.

What is the output type of this voltage detector?

The output is an active low CMOS signal.