TL431BQPKG3

$0.24

Description：IC VREF SHUNT ADJ 0.5% SOT89-3
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:2433e3f0fa2d Category: Voltage Reference Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC VREF SHUNT ADJ 0.5% SOT89-3
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Output Type：Adjustable
Voltage - Output (Min/Fixed)：2.495V
Voltage - Output (Max)：36 V
Current - Output：100 mA
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount
Package / Case：TO-243AA
Supplier Device Package：SOT-89-3
Grade：-
Qualification：-

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TL431BQPKG3

Overview

The TL431BQPKG3 is a precision adjustable shunt voltage reference manufactured by Texas Instruments. It operates within a supply voltage range of 2.495 V to 36 V and provides an initial accuracy of ±0.5%. The device supports a maximum cathode current of 100 mA and requires a minimum operating current of 700 µA. Designed for automotive applications, it functions reliably across an extended temperature range from -40°C to +125°C. The component utilizes a surface-mount SOT-89-3 package and complies with RoHS3 standards.

Feature Summary

Provides high-precision voltage regulation with ±0.5% initial accuracy at 25°C
Engineered for automotive environments with specified thermal stability
Features sharp turn-on characteristics suitable as a Zener diode replacement
Offers low output impedance and low noise performance

Applications

Automotive power supply regulation
Precision voltage references in industrial control systems
Switching power supply feedback loops
Board-level voltage monitoring circuits

Procurement Notes

Verify the specific suffix 'Q' indicates automotive qualification requirements before procurement. Confirm that the SOT-89-3 package aligns with PCB footprint constraints. Ensure the -40°C to +125°C temperature rating meets the operational environment specifications. Check for moisture sensitivity level (MSL) handling requirements during storage and assembly processes.

Selection Notes

Select this component when automotive-grade reliability and tight voltage tolerance are required. The ±0.5% accuracy distinguishes it from standard grade options. Consider the SOT-89-3 package size for space-constrained designs. Evaluate the 100 mA current capability against load requirements to ensure adequate headroom for circuit operation.

Part Context

This part belongs to the TL431 family of programmable shunt regulators. It serves as a three-terminal device widely used for voltage referencing and loop control. The TL431 series offers improved stability and accuracy compared to traditional Zener diodes, making it a standard choice for linear and switching power supply designs requiring precise voltage regulation.