SCV431BSN1T1G

Overview

The SCV431BSN1T1G is a low voltage precision adjustable shunt regulator from onsemi, belonging to the TLV431 series. 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 temperature. The device operates within a cathode current range of 0.1 mA to 20 mA and exhibits a dynamic impedance of 0.25 Ω. Packaged in SOT-23-3, it supports an operating ambient temperature range of -40 °C to 125 °C and is AEC-Q100 qualified.

Feature Summary

• Programmable output voltage ranging from 1.24 V to 16 V
• High reference accuracy with ±0.5% initial tolerance
• Sharp low current turn-on characteristic for efficient regulation
• Automotive qualification with AEC-Q100 certification

Applications

• Error amplifier for isolated switching power supplies
• Adjustable linear and switching power supply circuits
• Voltage monitoring systems
• Precision analog and digital reference circuits

Procurement Notes

Verify that the SCV prefix confirms the SOT-23-3 package configuration and automotive-grade status. Ensure the BS suffix corresponds to the required ±0.5% accuracy class. Confirm PPAP capability requirements are met for the specific application site. Check RoHS compliance documentation for environmental standards.

Selection Notes

Select this component when high precision is required in a micro-miniature surface-mount package. The wide operating temperature range suits harsh environments. Consider the low dynamic impedance for stable feedback loop performance. Evaluate the sharp turn-on characteristic for low-current applications.

Part Context

This part belongs to the TLV431 family of programmable shunt regulators. The SCV prefix designates automotive-grade devices manufactured at specific sites with unique control changes. It serves as a direct replacement for Zener diodes where precise voltage referencing is critical.

Replacement Considerations

TLV431BSN1T1G offers equivalent electrical specifications in standard commercial grade. NCV431BSNT1G provides similar performance in TSOP-5 packaging. Verify pinout compatibility and thermal characteristics before substitution.

FAQ

What is the minimum cathode current required for regulation?

The device requires a minimum cathode current of 0.1 mA to maintain proper regulation.

Does the SCV prefix indicate automotive qualification?

Yes, the SCV prefix indicates the device is AEC-Q100 qualified and PPAP capable for automotive applications.