NCV431BSNT1G

Overview

The NCV431BSNT1G is a low voltage precision adjustable shunt regulator from onsemi, part of the TLV431/NCV431 family. It features an adjustable output voltage range of 1.24 V to 16 V with a reference tolerance of ±0.5% at 25 °C and ±1.0% over the temperature range. The device operates within a cathode current range of 0.1 mA to 20 mA and exhibits a dynamic impedance of 0.25 Ω maximum. It is qualified under AEC-Q100 standards for automotive applications and supports an operating ambient temperature range of -40 °C to +125 °C in a TSOP-5 package.

Feature Summary

• Programmable output voltage range spanning 1.24 V to 16 V
• High reference accuracy with ±0.5% tolerance at 25 °C
• Sharp low current turn-on characteristic for efficient regulation
• AEC-Q100 qualified for automotive and high-reliability environments

Applications

• Error amplifier for isolated low output voltage switching power supplies
• Adjustable voltage or current linear and switching power supplies
• Voltage monitoring circuits
• Current source and sink circuits
• Low voltage zener diode replacements

Procurement Notes

Verify that the specific ordering suffix matches the required package type and tape & reel specifications. Confirm the component meets AEC-Q100 qualification requirements if intended for automotive use. Ensure the selected variant aligns with the necessary thermal resistance and operating temperature range constraints for the target application environment.

Selection Notes

Select this component when a precise, programmable shunt reference is needed in a compact surface-mount form factor. The NCV prefix indicates suitability for automotive applications requiring unique site and control change protocols. Consider the ±0.5% initial accuracy and wide operating temperature range when designing circuits demanding stable reference performance under varying thermal conditions.

Part Context

This device belongs to the TLV431/NCV431 series of low voltage precision adjustable shunt regulators manufactured by onsemi. The NCV prefix specifically denotes parts designed for automotive and other applications requiring unique site and control change requirements, distinguishing them from standard commercial variants while maintaining identical electrical characteristics.

Replacement Considerations

AZ9431AQSA-7 (Diodes Incorporated)