NCP308SNADJT1G

Supervisors Overview

The NCP308SNADJT1G is a voltage supervisory circuit from onsemi, designed for monitoring single-input power rails. It operates within a supply voltage range of 1.6 V to 5.5 V and features an adjustable threshold voltage with 0.15% accuracy. The device provides an active low, open-drain output and includes manual reset functionality. It has a fixed reset delay time of 300 ms and consumes only 1.6 uA of quiescent current. Qualified under AEC-Q100 standards, it supports an extended operating temperature range from -40°C to +150°C and is housed in a TSOP-6 package.

Supervisors Feature Summary

• Adjustable threshold voltage allows customization for specific supply rail requirements.
• Ultra-low quiescent current consumption of 1.6 uA ensures minimal power drain.
• Manual reset pin enables user-initiated system recovery independent of voltage conditions.
• Automotive qualification (AEC-Q100) supports deployment in demanding automotive environments.

Supervisors Applications

• Monitoring microprocessor power supplies in automotive infotainment systems
• Supervising battery backup circuits in vehicle control modules
• Ensuring stable operation of embedded controllers in harsh thermal environments

Supervisors Procurement Notes

Verify the exact suffix 'ADJ' confirms the adjustable threshold variant, as other suffixes denote fixed voltages. Confirm AEC-Q100 qualification status if automotive compliance is mandatory. Check RoHS documentation for environmental compliance. Ensure the TSOP-6 package matches your PCB footprint. Validate the 150°C maximum junction temperature against your system's thermal design constraints.

Supervisors Selection Notes

Select this component when an adjustable voltage threshold is required rather than a fixed value. The wide operating temperature range up to 150°C makes it suitable for high-heat applications where standard industrial parts may fail. The low quiescent current is critical for battery-powered or energy-efficient designs. Manual reset capability adds flexibility for system diagnostics compared to auto-reset-only devices.

Supervisors Part Context

This part belongs to the NCP308/NCV308 family of voltage supervisors. The NCV prefix typically indicates automotive-grade qualification, while NCP denotes general industrial/commercial grades. The ADJ suffix specifically identifies the adjustable threshold version, distinguishing it from fixed-voltage variants like NCP308SN180T1G. All members share similar low-power characteristics and TSOP-6 packaging.

Supervisors Replacement Considerations

Direct substitutes include other NCP308/NCV308 series parts with matching TSOP-6 packages. Verify that any replacement maintains the adjustable threshold feature and 150°C temperature rating. Fixed-voltage equivalents require circuit redesign if the monitored rail voltage differs. Ensure the replacement also offers manual reset functionality if required by the design.