TL431AIPK

$0.18

Description：IC VREF SHUNT ADJ 1% SOT89-3
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:c307396051b7 Category: Voltage Reference Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC VREF SHUNT ADJ 1% 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 ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：TO-243AA
Supplier Device Package：SOT-89-3
Grade：-
Qualification：-

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TL431AIPK

Overview

The TL431AIPK is a three-terminal adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 2.495V to 36V and provides an output current capability of 100mA with a minimum cathode current of 700µA. The device features a ±1% initial accuracy tolerance at 25°C and functions across a temperature range of -40°C to +85°C. Packaged in a surface-mount SOT-89-3 (TO-243AA) housing, it serves as a high-performance replacement for Zener diodes in board-level regulation and switching power supply applications.

Feature Summary

Provides precise programmable reference voltage functionality via external resistors
Delivers stable regulation with low output impedance characteristics
Supports active output circuitry for defined turn-on behavior

Applications

Board-level voltage regulation circuits
Adjustable linear and switching power supplies
Replacement for discrete Zener diodes in reference applications

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to confirm package type and tolerance grade. Ensure compatibility with the required operating temperature range and surface-mount footprint dimensions before integration into the design.

Selection Notes

Select this component when a compact surface-mount solution is required for precision shunt regulation. The SOT-89-3 package offers a balance between thermal performance and board space efficiency compared to larger through-hole alternatives.

Part Context

This device belongs to the TL431 family of adjustable shunt regulators from Texas Instruments. These components are widely utilized in power management systems requiring accurate voltage referencing and regulation without the complexity of full IC-based controllers.