TL431BSA-7

Overview

The TL431BSA-7 is a programmable shunt regulator manufactured by Diodes Incorporated, housed in an SOT-23 surface-mount package. It provides a reference voltage range of 2.495V to 36V with an initial accuracy of ±0.5%. The device supports a maximum cathode current of 100mA and operates within a temperature range of -40°C to +125°C.

Feature Summary

• Provides precise adjustable voltage regulation via external resistor divider
• Ensures thermal stability across wide operating temperature ranges
• Features low dynamic impedance for stable performance

Applications

• Precision voltage references in power supply circuits
• On-line isolation amplifiers
• Switch-mode power supplies

Procurement Notes

Verify the specific suffix 'BSA' against the manufacturer's official datasheet to confirm pinout configuration and tolerance grade. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the ordering code with Diodes Incorporated documentation to validate active status and packaging details before procurement.

Selection Notes

Select this component when a compact, high-accuracy voltage reference is required in space-constrained designs. The SOT-23 package suits automated surface-mount assembly. Consider the ±0.5% initial accuracy and 100mA current capability relative to circuit load requirements and thermal dissipation constraints.

Part Context

This part belongs to the TL431 family of programmable shunt regulators. It serves as a versatile alternative to fixed voltage reference diodes, offering adjustable output through external resistors. The series is widely used in industrial and consumer electronics for feedback control and reference applications.

Replacement Considerations

Compatible substitutes include the TL431ACA-7 and TL431IDR. Verify that replacement parts maintain identical pin configurations and electrical specifications such as voltage range and accuracy.